14 best freshwater filters

Freshwater filters are essential components of aquarium setups for maintaining water quality and providing a healthy environment for fish and other aquatic pets. These filters help remove impurities, debris, and harmful substances from the water, ensuring that it remains clear and safe for the aquatic inhabitants.

Here are some key aspects of freshwater filters:

  1. Filtration Types:

    • Mechanical Filtration: This type of filtration physically removes solid particles, such as uneaten food and waste, from the water. It often involves a filter pad, sponge, or mesh that traps these particles.

    • Chemical Filtration: Chemical filtration uses specific media, like activated carbon or chemical resins, to remove dissolved impurities, such as chlorine, ammonia, and heavy metals. These substances can be harmful to aquatic life.

    • Biological Filtration: Biological filtration is essential for establishing a beneficial bacterial colony in the aquarium. These bacteria break down ammonia and nitrite into less toxic nitrate. This process is crucial for maintaining water quality.

  2. Types of Filters:

    • Hang-On-Back (HOB) Filters: These filters are mounted on the back of the aquarium and are easy to install and maintain. They typically combine mechanical and chemical filtration.

    • Canister Filters: Canister filters are placed outside the tank and offer a higher filtration capacity. They are suitable for larger aquariums and provide mechanical, chemical, and biological filtration.

    • Sponge Filters: Sponge filters use a sponge as both the mechanical and biological filter media. They are commonly used in breeding tanks and for gentle water circulation.

    • Undergravel Filters: These filters are placed beneath the substrate and promote biological filtration by creating an area for beneficial bacteria to thrive. They are less popular today but are still used in some setups.

  3. Filter Maintenance:

    • Regular maintenance is crucial for the effectiveness of freshwater filters. This includes cleaning mechanical filter media, replacing chemical filter media when exhausted, and monitoring the biological filter for stability.
  4. Filter Sizing:

    • Choosing the right-sized filter for your aquarium is essential. The filter's capacity should match the tank's volume, and it's often recommended to choose a filter rated for a larger tank than you have.
  5. Cycling the Aquarium:

    • Before adding fish to a new aquarium, it's important to cycle it to establish a stable biological filter. This process typically takes a few weeks and involves introducing ammonia to kickstart bacterial growth.

In conclusion, freshwater filters are vital for maintaining the water quality in aquariums, ensuring the health and well-being of the fish and other aquatic pets.Proper selection and maintenance of the filter are essential for a successful and thriving aquarium ecosystem.

Below you can find our editor's choice of the best freshwater filters on the market
  

MarineLand Penguin 350 Power Filter

Based on 10 reviews Check latest price

Product description

For more than 40 years, Marineland has been committed to fishkeeping success. By applying biological science, advanced engineering and imagination to fishkeeping, Marineland continues to be the leader in innovative aquatic environments & equipment. Today, that spirit of innovation is alive and well at Marineland. Whatever your passion — fresh or saltwater, big or small — count on Marineland to bring you the most reliable, the most technically advanced, the highest quality aquariums and accessories on the market. All Penguin BIO-Wheel Power Filters deliver easy, three-stage mechanical, chemical and biological aquarium filtration. Convenient Penguin Rite-Size Filter Cartridges come ready to use with each filter...ready to mechanically and chemically remove waste, discoloration and odors. Each contains new faster-acting Black Diamond Premium Activated Carbon for maximum efficiency. Biological filtration is provided by the revolutionary and patented BIO-Wheel - proven best at removing toxic ammonia and nitrite. All BIO-Wheel filters feature Noise-Reducing Two-Piece Vented Covers, and Adjustable Mid-Level Intake Strainers.

  • WITH ROTATING BIO-WHEEL: Patented Bio-Wheel technology provides excellent wet/dry biological filtration.
  • MULTI-STAGE FILTRATION: Delivers mechanical, chemical and biological aquarium filtration to maintain a clean aquatic environment.
  • COMPATIBILITY: Use with Marineland Rite-Size Filter Cartridges (see individual filter for sizing recommendations).
  • FIVE SIZES: Available in 75 GPH, 100 GPH, 150 GPH, 200 GPH and 350 GPH sizes.
  • age range description: All Life Stages

User questions & answers

Question: does the filter come with the bio wheels
Answer: Yep. It comes with everything you need. Great hob filter!!!!
Question: Is there somewhere to put the small biomax rings? or extra room in the filter for them? Thank you
Answer: Yes there is. There is a big space between filters and back if filter. I have fluval ceramic rings in mine.
Question: How much clearance between the wall and the aquarium is required
Answer: I have 4 inches from the back of my Aquarium and the wall. There is 1 inch between the back of the Filter and the wall.
Question: how do to maintence on 350 marine penguin power filter
Answer: Generally good answers...these blue pads clog quickly, I like to rinse all my filters, but these really "hold" the detritus. OF course I would normally rinse filter pads in a bucket of old aquarium water DURING the water change. But tapwater is usually fine too . So, get the reusable frames they sell for 2 or 3 dollars. At least the blue pads are cheap on amazon and WM for a 6 pack.

Hagen Fluval Canister Filter for Aquariums - FX6-400 Gallon

Hagen

Based on 1 reviews Check latest price

Product description

Fluval FX6 is a high performance canister filter with many outstanding features designed to make aquarium fish keeping easier and more convenient than ever. This super capacity yet compact canister filter has a pump output of 925 gallons of water and has a filter circulation of 563 GPH, which both work to produce cleaner and healthier results. Filtering material can easily be placed in a removable stack of media baskets, which is at the heart of Fluval's multistage filtration. The baskets are precision-engineered to eliminate water by-pass, making filtration more efficient. The baskets can hold a total of 1.5 gallons of media and can be stacked in the precise combination of layers that will work best for your aquarium. Each one is lined with a foam insert for effective mechanical pre-filtering. Instant-release T-handles let you lift and separate the baskets quickly and easily, making routine maintenance simple. FX6 also features Smart Pump Technology, which provides optimum filter performance. This advanced technological feature employs an electronic circuit board that continuously monitors the pump. Impeller speed and force are constantly measured to ensure power output and energy efficiency. It also manages the filter's self-starting feature and evacuates air that may enter or build up within the filtration system. On a 12-hour cycle, the pump will pause and allow trapped air to escape, ensuring the best filtration efficiency. Only 21" in height, FX6 fits under most aquariums. Fluval first broke onto the aquatic scene in 1975 by introducing the world’s first 3-stage filter with synchronous motor technology. Since then, Fluval has built a legacy around this pioneering spirit, relentlessly adapting in a changing world to launch innovative aquarium products. Fluval’s mission is not just about building products that mimic the natural world, but inspiring aquarists of all skill levels to enjoy and respect the hobby for generations to come.

  • Multi-Stage Filter that produces healthy aquarium water, freshwater or marine aquariums
  • Features Smart Pump Technology for optimal filter performance, efficiency and management
  • Self-starting filter-just add water and plug in. Head height (maximum): 3.3 m (10.8 feet)
  • For aquariums up to 400 gallons

User questions & answers

Question: How does this filter work to keep the surface water clean? I have used canister filters before and always end up with that film on top of the water
Answer: Yes you can choose to use them, but put them in the bottom basket because the flow is sucked up and you can cut you flow rate when the polishing clothe gets sucked in up against water return filter screen. (I thought I broke mine then I took it apart and found my mistake). I use a foam pad versus poly fill tho and then just rinse it every month. And there is plenty of room for bio media on top of the foam and in the other baskets.
Question: How is it's long-term reliability? I have had several canister filters in the last 15 yrs and all have leaked
Answer: Yes you need at least 24" but 36 would be better. The connectors are app. 5" and the hoses are pretty stiff so they don't bend well. I have the same space in my stand and I had to cut out the back to slide it farther back and then I have to disconnect the hoses before I can remove the unit. I will get another stand as soon as I can. You also want at least 20 inches between the top of the tank and the unit.
Question: I am sitting up a 75 gallons tank in my office i don't want to clean it a lot what fluval pump would you suggest
Answer: Spec says.....80-160 US Gallon which pretty much speaks for itself. get the Fluval FX6 which has a much higher output and made for bigger tanks......even with this filter you need more circulation for a tank of that size. Most specifications are on the high end. I personally wouldn't go bigger than a 100 gallon with the G6
Question: How is the longevity of the FX6 compared to other filters people have owned? (primarily Eheim). I will be using it in a turtle tank if that matters
Answer: The water flow is not adjustable as far as I can tell. I have not had the need to adjust as the pressure seems optimal and I have three of these units on three separate aquariums, each with different populations of fish.

Product features

Fluval Canister Filter, FX6 Filter (400 Gal)

Designed for aquariums up to 400 gallons, FX6 is the high-capacity workhorse of Fluval’s canister lineup, enhanced with all the power and reliability you’ve come to expect from a high-performance filter.

  • Multi-stage filter pumps out an astounding 925 gallons (3500 L) of water per hour
  • Smart Pump – advanced microchip technology continuously monitors and optimizes pump performance
  • Self-starting – just add water, plug in and Smart Pump will take over. Trapped air auto-evacuated every 12 hours to ensure maximum efficiency
  • Easy water changes eliminate need to lift heavy buckets. Simply attach hosing to output (Kit sold separately) and Smart Pump does the rest
  • Removable, stackable media baskets eliminate water bypass and hold a total of 1.5 gallons (5.9 L) of media

Features:

  • All filter media included – mechanical, chemical and biological
  • Aqua-Stop valves with leak-proof Click-Fit attachment system
  • Valves positioned at convenient 45-degree angle for easy installation and rotation
  • Anti-clog, telescopic strainer ensures continuous water flow
  • Multi-Directional Output nozzles can be fully adjusted to create customized water flows
  • Purge Valve with drain hose for easy maintenance and flushing of canister
  • Rubberized feet help ensure quiet operation
  • 21″ tall design – easily fits under most aquariums
  • For use in freshwater and saltwater aquariums

YCTECH 10-50 Gallon Aquarium Fish Tank Hang Filter with Surface Skimmer 3 Stage Water Skim Filter Pump 211 GPH Adjustable Flow Filter

YCTECH

Based on 196 reviews Check latest price

Product description

YCTECH Hang-On-Back Aquarium Filter keeps the water clean and clear with minimal maintenance.

- The controllable 211 gallon (800L) flow rate will work with any tank 10 to 50 gallons whether its saltwater or freshwater.

- The filter runs quiet and is dependable with 3 media types and surface skimmer, scouring tank water of dirt, debris, chemicals. Compatible with any type of media.

- It arrives READY TO GO includes 1 Aquarium Filter, 3 media, 1 Manuel. HOB installation is quick and easy.



Key Features

- Ideal for tanks 10-50 gallon

- Flow rate up to 211 gallons/ 800 liter per hours

- Rotating valves, adjustable flow control for intake tube and surface skimmer

- 3 Filtration stages are separated, easy to remove for cleaning

- Hang on back installation

- 5W Energy efficient motor

- 1 year warranty



Package

1 Aquarium Filter (tube + surface skimmer attachments), 3 Media, 1 Manuel



Tips

Prime filtration stages with water before use.

Please feel free to contact us if you have any questions

  • ★ Practical: Advanced 3 step filtration Biological and mechanical filtration. Box includes active carbon and bio media Accumulator for oil slick, remove surface films effectively
  • ★ Adjustable: lengthened water inlet pipe, the length adjustable range is between 3-16 inch, which is suitable for aquarium with different heights.and the filter boxes can be taken out separately, which is easier to clean
  • ★ Quiet: You can adjust the amount of water flow at will. With the water outlet design, it is very quiet and won't affect the quality of sleep even if the fish tank is in the bedroom
  • ★Application: Can be used in aquariums, fish tank and turtle tanks for 20-50 gallon filters system
  • ★ Backed by 12 month warranty and 24 hrs professional after-sale service

User questions & answers

Question: What size filter does it take and where can i get them
Answer: It fit for20-50 gallon fish tank
Question: Can this be used on a 20 gallon saltwater tank
Answer: I dont see why not!
Question: How much volts
Answer: 120V. Normal American house plug
Question: How do you know when the uv light is on ? it’s switched to the on position but how am i sure
Answer: Our YCTECH 20-50 Gallon Aquarium Fish Tank Hang Filter with Surface Skimmer does not have UVlight, but we are 3 Stage Water Air Skim Filter Pump, 211 GPH Adjustable/Flow Biological Filtration Oxygen Circulation Wall Mounted Filter

AQQA Aquarium Electric Power Sponge Filter,3W/5W Silence Submersible Foam Filter,Sponges Bio Ceramic Media Balls Double Filter for Saltwater Freshwater Fish Tank

AQQA

Based on 85 reviews Check latest price

Product description

Welcome to AQQA🐟🐟

AQQA is a professional shop specializing in aquarium supplies and accessories,all products from this store the actual filming of goods please rest assured that you purchasers to buy!

We are determined to provide better product and better services to our customers.Our customer service is online 24 hours, providing pre-sale, sale, after-sale service, the product implements a free return policy, Free replacement within 3 months. If you have any questions, please feel free to contact us.

AQQA--Aquarium accessories,Quality Assurance



Product Description

🐟Product Name:AQQA Electric Power Sponge Filter

🐟Size:S M

🐟Suggest tank size:10-40 gallon 15-55 gallon

🐟Cord length:5.6FT

🐟Outlet Pipe Length:6.1"~9.25"

🐟Package included:1*Filter 2*Sponge 2*Suction Cup



Main Function

1.Purify water quality,remove the peculiar smell

2.Create an ecological environment conducive to the healthy growth of fish, shrimps and turtles

3.Increase dissolved oxygen

4.Absorb feces, debris and residues in water



Note

1.Be sure to take the spare sponge out of the filter box before use

2.Clean the sponge and biochemical ball before putting it in the fish tank

3.Make sure the double sponge filter oriented vertically, otherwise the pipe will be blocked by the ceramic pearls.

4.Clean the filter with tank water every 2 ~ 4 weeks.



WARRANTY

1-year free warranty.



If you have any questions, please contact us, wish shopping happy

  • ⚡【Upgrade Electric Power Filter】Filter with powerful motor,no need air pump, Work more efficiently and energy saving.Internal Submersible is very quiet,Noise is less than 30db,Selected high-quality motors, longer service life.
  • ⚡【Double Filter:Physical Filtration+Biochemical Filtration】The high-quality biochemical cotton adopts a ribbing design to increase the surface area and filter out automatically absorb feces, debris and residues in water.Bio Ceramic Media Balls improve the filtering effect, can quickly purify the water quality.Ceramic balls can also be replaced by other filter materials.
  • ⚡【Water Outlet Can be Adjusted 360°and Stretch】The retractable water outlet can be adapted to fish tanks of various depths, and the water outlet can be submerged in the water or out of the water.Filtration can not only purify water quality and increase water circulation, but also increase the oxygen content in the water.
  • ⚡【4 Sponge 1 bag of Bio Ceramic Media Balls 2 Suction Cup】Comes with 2 spare sponges, put them in the filter box, please take out the spare sponges before use.The filter box can be filled with bio ceramic media balls, or nothing, or other filter media.It can be sucked tightly around the fish tank or the bottom without sand.
  • ⚡【Suitable For Saltwater or Freshwater】Bio ceramic media balls with a layer of protective powder,it was normal.Before use, please clean the sponge and ball with the water in the fish tank before putting it in the fish tank.

User questions & answers

Question: I have a 60 gallon fresh. Should i use two smalls or two large filters
Answer: I don't use this for my Betta tanks (I have 7 Betta only tanks) only my 50 gallon cichlids tank because bettas are such hardy fish they can survive in most conditions. For my Betta tanks I use tap water and the aquasafe (a dechlorinator) and they're happy as can be. But the test strips are very easy to read. just go online to look at the general parameters they should be in before you do the test. If you do purchase these read the instructions some of the strips you have to read right away and some you have to wait a few minutes.
Question: What's the expected life of this product? Is there a replacement sponge available
Answer: Yes. 4 of the 5 tests work for saltwater also. Only the GH (general hardness) does not work for saltwater.
Question: How the filter add oxygen level without air circulation? I guess water out hose must be above water surface, correct
Answer: I found them easy to read and liked that the chart is printed on the container that holds the strips so it's readily available. When I first got my kit, I read the instructions and using a felt tipped pen, circled the values that my tank should be at for each test, so when I performed a test I could check it immediately instead of referring back to the instructions each time.
Question: Is the amount of biochemical ceramic balls used once
Answer: Just remember that most of these test kits or strips for aquarium use report their results as "nitrate ion" or "nitrite ion", while the EPA standard for drinking water is expressed as "nitrate as nitrogen" or "nitrite as nitrogen". Thus, your aquarium test kit or strip will report a value considerably higher than what it "should" for comparison with a lab test or the EPA standards. This causes a lot of people to needlessly worry.

Penn-Plax Cascade Hang-on Aquarium Filter with Quad Filtration System Cleans Up to 100 Gallon Tank (CPF5)

Penn-Plax

Based on 945 reviews Check latest price

Product description

The Penn Plax Cascade Hang On Aquarium Filter features a revolutionary Bio-Falls Quad Filtration System to keep your tank clean and healthy. The polyfiber floss cartridge traps floating particulate matter while the activated carbon cartridge removes harmful chemicals, toxins, odors, discoloration and other contaminants from the water. The internal sponge optimizes the colonization of beneficial anaerobic bacteria while removing ammonia and nitrites. The external Bio-Falls wet/dry biological booster provides anaerobic bacteria for additional ammonia and nitrite removal while enhancing oxygen exchange for maximum water oxygenation. This hang on aquarium filter attaches easily to your tank by sliding over the edge of the glass. A leveling device keeps your filter in position and the self-priming intake tube has a built-in extendable stem to allow placement of the intake strainer close to the bottom of most aquariums. Filter includes an adjustable flow control knob to reduce filtration during feeding times or as needed, and the quiet and efficient motor is maintenance free. The Penn Plax Cascade hang on filter delivers up to 300 gallons of water per hour and is suitable for fish tanks from 55 to 100 gallons in size. It measures 11 inches high by 9. inches wide by 6.5 inches deep and is suitable for both freshwater and saltwater tanks. The Cascade Aquarium Filter Comes with bio floss and activated carbon cartridges and is ready to use.

  • Hang on aquarium filter quietly delivers 300 gallons per hour of crystal clear water for your fresh or marine aquariums from 55 to 100 gallons in size.
  • Revolutionary Bio-Falls Quad-Filtration system provides efficient filtration with anaerobic bacteria for additional ammonia and nitrite removal providing maximum oxygenation.
  • Activated carbon cartridge removes harmful chemicals, toxins, odors, discoloration, and other contaminants for your aquarium.
  • Internal sponge optimizes colonization of beneficial anaerobic bacteria and polyfiber floss cartridge traps floating particulate matter.
  • Adjustable flow knob allows you to reduce filtration during feeding times or as needed. Aquarium filter is recommended for both freshwater and saltwater applications.

User questions & answers

Question: I have a 56 gallon tall tank and need a filter that works well in this type. Will this model work well in the tall tank type
Answer: I think you will be happy with this filter. I am using one in my 200 gal fish tank I like it because 1. it is a good filter 2. It keeps the water oxygenated. ( lot's of bubbles ) :-) when I get my 75 gal tank ready I all ready have one for it.
Question: After 1 year using the cascade 300 it is making noises now and sounds like it is sucking air or something. It is really annoying
Answer: I have the Cascade 100 and think this may be my problem too. I take it apart, clean it, refill it, and it works for maybe a day or so then the water level goes down to a trickle. I tried playing around with the flow adjuster and it doesn't seem to do anything at all. It's so annoying! I can't seem to find a way to permanently fix it! I also have a Cascade 20 and have no issues with it at all.
Question: What is the KWH for the 300 per day
Answer: idk but its probably not anything your going to notice
Question: Hey guys, what is the voltage? does it go from 110 v to 240v? i don't see it on amazon uk. if it doesn't work with 240v, what can i do? thanks
Answer: Thanks for your question. This filter is 110V and there's no way to adjust it to 240V for England. We wouldn't recommend running this filter with a power converter, so your best bet may be to stop by your favorite local aquarium store to purchase your filter.

Product features

Cascade 300 Power Hang-On Filter

The Cascade 300 Power Hang-On Filter quietly delivers crystal clear water throughout the aquarium. This filter pushes water at 300 gallons per hour (GPH) for tanks up to 100 Gallons in size. It’s great for Freshwater and Saltwater Aquariums.

Intuitive Features

Intuitive features make Cascade Power Hang-On Filters a breeze to set up. The adjustable flow rate and the adjustable intake tube allow you to manipulate the filter to your individual needs with ease. Furthermore, the disposable, double-sided media cartridges allow for simple filter and aquarium maintenance.

Powerful Filtration

Designed for today’s modern aquariums, the Cascade line of Power Hang-On Filters features three stages of filtration that provide filtered, crystal clear water for your aquarium.

Light & Whisper Quiet Operation

In addition to being extremely powerful, Cascade Power Hang-On Filters are some of the quietest filters available on the market. In addition, they're designed to be used in both freshwater and marine environments, and are trusted by aquarists worldwide.

The Cascade 300 Power Hang-On Filter from Penn-Plax

The Cascade 300 Hang-On Filter from Penn-Plax is designed to provide comprehensive filtration for today’s modern aquariums.

With a flow rate of 300 gallons per hour, the Cascade 300 is ideal for aquariums up to 100 gallons in size. Despite the robust power of the Cascade 300, it manages to filter your aquarium with whisper quiet efficiency.

Each Cascade filter has intuitive features, such as a self leveling system, adjustable flow rate, and adjustable intake tube length. They're ready to go, right out of the box; setup takes just a few minutes.

This Cascade filter utilizes disposable, double-sided media cartridges that contain Activated Carbon and Poly Fiber Floss. The included cartridge traps floating particulate matter, removes harmful chemicals and toxins, clears up discolorations, and reduces foul odors from your aquarium’s water. In addition, it features a Bio-Sponge cartridge that optimizes colonization of anaerobic bacteria, and is independent from the first stage filter media.

Hydor Professional External Canister Filter – Aquarium External Filter – Telescopic Intake Tubes, Easy Priming – EcoSystem in a Box – Biological, Mechanical, Chemical Filtration – 450 to 320 gph

Hydor

Based on 549 reviews Check latest price

Product description

Hydor Professional External Canister Filter Whether you are a marine hobbyist or a passionate marine aquarist, know that Hydor’s Professional External Canister Filter is the perfect fit for your aquarium needs. Featuring an ecosystem in a box, this external canister filter comes equipped with telescope intake tubes, easy priming and safety locks, bringing the best of aquarium technology to your home or office. This space-saving professional external canister filter features gallon ranges from 20 to 150 and filter circulation from 160 to 290 gallons, depending upon the premium model you choose from Hydor. Use in freshwater or saltwater aquariums, knowing that this professional external canister filter can accommodate large filter volume with no water bypass. It’s simple to use and created with innovative technology. Hydor is an electromechanical company born in 1984 and has gained a reputation of high quality across the world. Hydor manufactures innovative filters, media and more in the field of aquarium technology, catering to the passionate marine aquarists. Features: - Safety Locks - Easy Priming - No Noise, Vibration - Large Filter Volume - Space Saving - Simple to Use - Telescopic Intake - No Water Bypass Package Includes: - 1 x Hydor Professional External Canister Filter Scroll up & click 'ADD TO CART' to get yours

  • COMPLETE ECOSYSTEM IN A BOX: This external filter for generation aquariums offers maximum performance and high filtration standards, not to mention an entire eco-system in a box
  • PREMIUM VERSATILITY: This professional external canister filter for aquariums features a priming pump that offers the versatility you need. The unit is ideal for both freshwater and saltwater aquariums
  • SIMPLE TO USE: The long-life ceramic shaft, large filter volume and safety locks make this professional external canister filter easy to use as a beginner or a long-term hobbyist. The space-saving unit is perfect for small and large aquariums
  • FILTER OPTIONS: Choose from professional external canister filters that operate with gallon ranges from 20 to 150. The filter circulation stems from 160 to 290 gallons, depending upon the model you choose
  • SPECIALIZED SERVICE: With more than 30 years of experience offering high-quality products for the passionate marine aquarist, Hydor is dedicated to manufacturing unique and innovative items in the field of aquarium technology

User questions & answers

Question: I have had this filter running for a month now. The water has a yellow tint to it. All the levels are good. What is causing this how do I fix? Carbon
Answer: Well I have been using the filter for about 3 months and I never had the yellow tint. The way I have it set up is (from the bottom up) :Tray 5- black sponge Tray 4- bio ballsTray 3- bio ballsTray 2- the ceramic rings it came withTray 1- white sponges and chemi-pure elite on top.It seems to keep my saltwater tank pretty clear.
Question: does this have the USA plug to plug in to the wall
Answer: Yes - it's a U.S. plug :)
Question: Can you adjust the strainer so it would work with a 20 gallon long tank, being that the tank is a little over 12" in height
Answer: I'm using same tank and everything works great in smallest/shortest configuration
Question: Tube diameter
Answer: My 350 has 3/4 O.D and 5/8TH I.D tubing on both inlet and outlet side of filter back to tank

Product features

Hydor Professional External Canister Filter

  • External filter for the modern aquarium.
  • An intelligent design conceived to make the most of the space beneath the aquarium, the filter offers maximum performance and extraordinary versatility.
  • Easy to use thanks to the priming pump, the Hydor Professional filter is useful for all aquariology enthusiasts.

Versatile

  • Configure your media baskets any way you like
  • Fine Mechanical Pad included
  • Coarse Mechanical Pad included
  • Sintered Quartz BIO-Rings included
  • *carbon is not included

Hydor Professional White Floss Pad Filter Media

Replacement available as a 2 pack

Hydor Professional Black Coarse Sponge Filter Media

Replacement available as a 2 pack

Hydor Labs Chemical Media

Complete line of Chemical Media to work in your Professional Canister Filter

  • Freshwater Activated Carbon (3 - 100 gram bags)
  • Marine Carbon (1 - 400 gram bag)
  • Natural Zeolite (1 - 550 gram bag)
  • Sintered Quartz BIO-RIngs (450 grams)

Sicce Shark ADV Internal Filter, Freshwater and Saltwater Application, for submerged use

Sicce

Based on 128 reviews Check latest price
  • SHARK ADV: This filter is an exclusively designed internal filter with a patented magnetic quick uncoupling system (MCS System). The modular design allows adding an extra filtering compartment.
  • FISH FRIENDLY: The Shark ADV Internal Filter contains an adjustable intake diameter to protect small fish. It is equipped with a transparent mechanical filter body for easy control of clogging level.
  • PRODUCT DETAILS: The Shark ADV is equipped with a Venturi system for improved oxygenation and features a unique magnet connecting system for easy maintenance. It has a filtering volume of 320 cm3.
  • LONG TERM USE: At Sicce, we expect the traditional use of the Shark ADV to have a long-lasting life of successful performance for multiple years with regular maintenance and care. .
  • SICCE has been present in the aquarium and gardening market for over 40 years, becoming a point of reference recognized worldwide for versatile, high-quality products.

User questions & answers

Question: Can the output be exposed for a DIY waterfall effect
Answer: Absolutely. In fact mine came with a cover that fits over the front that allows a hose to be attached making the customizing much easier. I us the hose to run the output under the gravel to the other end of my 20 long to create a more natural 1 direction flow for my creek dwelling fish.
Question: Would the 800 be ok for a 20 long pleco fry tank if placed on the end of the tank
Answer: Absolutely... it is super quiet and does an amazing job!
Question: Can this be used for a slider turtle tank
Answer: No it needs to be submerged to work properly. I have a red eared slider almost 8in long in a zoo med turtle tub and when I turned it sideways to have it submerged, my turtle would knock it loose. It wasn't helpful for my set up.
Question: What gallon tank is this for
Answer: I use 2 on a well stocked 40 gallon freshwater tank, and 2 on a mid stocked 20 marine tank. They are super quiet.

Product features

Sicce Shark ADV 800

The Sicce Shark ADV 800 internal power filters comes with an adjustable intake diameter to ensure that none of your precious fish can get caught or injured in the filter itself. Magnetic connections provide a tight, sealed grip around hose openings as well as water flow regulation for optimum accuracy. A sleek, modern modular design allows for additional filtration compartments to increase filtration capacity within the tank. The unit comes with a filter volume of 320 cm3. Energy efficient at only 10 watts and has a flow rate of 211 GPH. Suited for tanks up to 53 gallons.

The SHARK ADV is an exclusively designed internal filter with a patented magnetic quick uncoupling system (MCS System).

The modular design allows the possibility of adding one or more filtering compartments to increase the filtration capacity.

Water Flow and Flow Ducting Device

Wide sheet of water flow and flow ducting device included for a more orientable water flow.

Water Flow Regulation

Water flow regulation from the bottom grid. Adjustable intake diameter to prevent small fishes to enter in the filter.

Tool Free Maintenance

Sicce pumps are designed with users in mind. When it comes time for the regular maintenance of your pump no tools are required!

Whisper IQ Power Filter for Aquariums, With Quiet Technology

Tetra

Based on 2 reviews Check latest price

Product description

The Tetra Whisper IQ Power Filter with Stay Clean technology keeps aquarium water clean and clear. This quiet filter contains a soft barrier between the motor and the filter that serves as a sound shield to minimize noise. The bio-scrubber cultivates aerobic bacteria to remove toxic ammonia and nitrite, and the smart path spillway oxygenates the water and agitates the surface. With a self-priming, submerged motor and adjustable intake to fit your aquarium’s needs, the Tetra Whisper IQ Power Filter is perfect for use with both freshwater and marine fish. Works with easy-to-change Tetra Whisper Bio-Bag Filter Cartridges with Stay Clean technology – helps reduce buildup on aquarium glass, bind small dirt particles to make them easier to filter and stabilize pH levels to prevent crashes, meaning easier aquarium maintenance for you.Tetra Whisper IQ Power Filters are available in a range of sizes to fit your aquarium. This Tetra Whisper IQ 45 Power Filter treats aquariums up to 45 gallons (215 GPH). Convenient color coding makes it simple to choose the correct size replacement cartridge – use with size large Tetra Whisper Bio-Bag Filter Cartridges (blue packaging). Since 1951, Tetra has developed the world’s most comprehensive body of fish food knowledge, and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need – from a large variety of quality fish food and innovative equipment to test kits and decor.

  • QUIET aquarium FILTER: The Tetra Whisper IQ Power Filter with Stay Clean technology contains a sound shield for quiet filtration less than 40 dB.
  • SELF PRIMING: Submerged motor starts up with no priming required.
  • STAY CLEAN TECHNOLOGY: By maintaining healthy pH levels, creates easier maintenance for healthier fish.
  • CARTRIDGE REFILLS: Change cartridges monthly; uses large-sized Tetra Whisper Bio-Bag Filter Cartridges (refills sold separately).

User questions & answers

Question: Can my goldfish be in the tank already when I install the filter or does the filter need to run for some time before my fish can be in the tank
Answer: You can always install a filter with fish in the tank. If you are switching out filter systems, run both for a week or so until the new one has developed its own biological filter though.
Question: I ordered two 10g filters - ups tracking says was delivered - it never showed up! how do i get my two filters? don't really want a refund
Answer: Online UPS should have a complaint form to enter the tracking number and express your problem, or call UPS and tell em. They should be able to help.
Question: Does this come with any filters
Answer: One filter prefilled with carbon.
Question: On the 10 gallon version, how far does the intake extend into the aquarium
Answer: It is adjustable so between halfway and three-quarters of the way down.

Product features

Whisper(R) IQ 40

Whisper(R) IQ filters use StayClean(T-M) technology for easier maintenance and healthy fish. A sound barrier decouples motor from filter to give you the quiet you've always wanted. With better materials and impeller upgrades, these filters are made to last. It's time for a filter that's easy to use and easy to clean!

Why IQ?

Whisper(R) IQ technology gives you a filter that is does the job while staying quiet. The SoundShield provides a barrier between the motor and filter to minimize noise. Combine that with vibration dampening technology and these filters give you quiet power to keep your tank clean.

hygger 36 Counts Ceramic Bio Filter Media Brick for Salt Fresh Water Aquarium Canister Filter Pond, High Flow Rate Support Biological Filtration 4.4 lbs

hygger

Based on 19 reviews Check latest price
  • Porous Structure, High Flow Rate -- Hygger bio bricks is composed of countless 0.3 mm diameter nano balls( made from ceramic forged at high temperauture) with an optimum pore structure that lets water flow through it easily and providing surface area to help the bacteia colony grow and thrive. Therefore, it reduces the level of ammonia and nitrites
  • Keeping Water Pristine Clear -- These bio media helps to remove ammonia, nitrite and nitrate; reduces foul smell, various sorts of blemishes and discoloration; Thus, you'll have clear water in a short time
  • For Most Types of aquarium & Filter -- A perfect biological filter media to use for sump tanks, marine and freshwater fish tanks, ponds, canister filter and hang on filter
  • Cost-Effective, Less Maintenance -- this bio media is REUSABLE by rinsing it lightly with aquarium water in every month, with proper care and maintenance it can be used for 3 years. Change roughly 1/3 at a time every 3-5 months, replace all every year
  • Valued 36-Count Brick -- Each brick measures: 1.7" L x 1.7" W x 0.8" H (4.5×4.5×2 cm), Weight: approx 56 grams/each. Package includes: 36 packs ceramic bricks, approximately 4.4 lbs that’s enough for 45-75 gallons of water

User questions & answers

Question: Can this be used for Saltwater aquariums
Answer: Yes, it can used for saltwater.

Product features

BIO FILTER MEDIA

Hygger bio brick media keeps your aquarium water in pristine clear serving as biological filtration and mechanical filtration. Composed of countless 0.3 mm diameter nano balls, its porous structure provides a large surface area to help the bacteia colony grow and thrive. Thus, it removes ammonia, nitrite, and nitrate and improves water quality. Its solid structure does not tend to crumble and with proper care and maintenance it can be used for 3 years, very cost-effective. Do not clog easily, require very low mainteniance.

Specification:

  • Material: ceramic
  • Each dimension: 1.7" L× 1.7"W×0.8''H
  • Weight: 56 grams/each. 36-COUNT: 4.4 lbs
  • Material: ceramic

High Flow Rate

Mini in size, suitable for any hang-on filter, canister filter, and sump tank.

Extremely porous structure, lets water flow through it easily and providing a surface area to help the bacteia colony grow and thrive.

Note:

  1. 1For the reef tank, we suggest to complete it with Jaubert system or Berlin system as these bio-media lack anaerobe. Do not use these bio-media as single filter media when build up a reef tank filter system.
  2. Rinse these bio blocks thoroughly before use. Please remember to rinse them in aquarium water not tap water.
  3. Replenish only ⅓ at one time to allow proper seeding.
  4. It usually takes 1-3 weeks for bacteia to grow. Thus, we recommend to replace partial media filters every 3-5 months.
  5. It is better to place filter pads on top to filter out debris. This will prolong the service life of filter media.

Polar Aurora Free Media 4-Stage External Canister Filter with 9-watt Light, 525 GPH with Free Media

Polar Aurora

Based on 758 reviews Check latest price
  • Good for up to 200 gallon fish tanks. Maximum flow rate of 525GPH from built in pump
  • 4 media trays capable of handling your choice of filtration media; Comes with an adjustable spray bar. This is a helpful feature if you want to adjust the output flow from the filter
  • Convenient self-priming pump that eliminates the need for manual siphoning; Single valve disconnect & priming pump ease routine maintenance
  • Built in 9 Watt Light for promoting clear water. With free media.
  • The four flexible media trays allow you to add other filtration media such as SunSun's activated carbons, ceramic rings or bio-balls to achieve excellent mechanical, chemical, and biological filtration.

User questions & answers

Question: What model is this, 404B
Answer: Dear customer, sorry, we don't have 404B filters, thank you!
Question: how often does the carbon need replacement. i only have 1 zebre, 1 betta, 1 catfish, and 1 tank sucker. in 5 gallons
Answer: disagree with the other comments about a filter being too large - even with a 5-10 gallon tank get the biggest canister filter you can afford. More water volume = cleaner water. Remember the old saying: "The solution for pollution is dilution"
Question: Anyone use this with turtles
Answer: I have a 135 gallon tank and use it with my turtle. I'm honestly not sure why it says it can't be used for turtles as I have no issues with it. I -do- have the spray facing a little more towards the tank wall so it's not quite so strong and I did get the 525GPH (even with the smaller tank) because my 90 gallon tank we had prior with a Rena XP3 would get gunked up really quickly, even though it was supposedly good for up to a 175 gallon tank. I haven't had mine running more than two days with the new tank so far, though, so I'll have to see how well it does.
Question: Are parts available? I would like to get a second in/out coupling
Answer: Parts are available and relatively cheap, but be sure to get the right size - just go by the number of the unit '304B' or whatever. I ordered a full kit of black plastic and green tubes, cost about $23.xx, and was satified with it. Months later I bought just the black plastic parts but accidentally bought the wrong, smaller, size, and am now returning them. I don't know if you can buy the green tubing all by itself.

Product features

Free Media 525GPH External Aquarium Filter with 9 watt UV Light

  • 1x Input and Output Discreteness
  • 1x Barrel Head
  • 1x Main Canister Body
  • 1x 9W UV Light Bulb
  • 2x 5 feet lengths of flexible tubing
  • 1x Draining Tray Cover
  • 4x Draining Trays
  • 1x Output Curvy Bar;1x Input Curvy Bar;2x Connected Bars
  • 2x Spray Bars ;1x Spray Bar Cover
  • 1x Dirtiness entrance

Questions and Answers:

  1. UV light/glass cover broken/doesn't work : if damaged, send us an email and some pictures about it, we will resend you a replacement. If not, rotate the top lid 180 degree, and try it again. Because there is only an inductive part on one side
  2. Missing pieces: We may miss some pieces when packing, please send us an email if any part is missing
  3. Leaking: Please check if the glass cover was broken. If not, make sure all pieces are assembled correct, adjust the o-seal ring on the top lid and put the filter lower than your tank, and make sure water can get through the green hoses soomthly
  4. Loud noise from the motor: You may need to check the impeller on the top lid if there is anything in it, and clean it. And then try it again
  5. Not pump water: Press the blue button on the top lid to compel the extra air out of the canister. And try it again
  6. The flow is slow: Add enough water into the tank, and adjust the cotton and medias
  7. Note: Push the glass tube all the way down, then twist it to lock in place

O-Ring

O-Ring with vaseline, prevent leaking and slipping

Input and Output Discreteness

Separated components, 360°swivel joint, prevent water flow inside the bucket

Basket

With 4 baskets. Each basket has its own filter cotton which diameter is about 10CM.

Press Type Pumping

Be sure to drain the air out of the bucket before using.

Imagitarium Undergravel Filter, 29 Gallon

Imagitarium

Based on 28 reviews Check latest price

Product description

The Imagitarium 29 gallon Underwater Gravel filter helps keep aquarium water fresh and clean. This two plate filtration system was durably constructed, and made to hide beneath your aquarium s substrate. Comes with two filter cartridges.

  • Works freshwater and saltwater tanks
  • Compatible with 29-gallon size tanks
  • Two filter cartridges included
  • Compatible with Penn Plax Filt-a-Carb replacements filters
  • Compatible with Penn Plax Ammonia-X replacement filter

User questions & answers

Question: how do you attach the stone it comes with plastic on it does it stay on
Answer: Get a new air stone and attach it to the tubing
Question: Does anyone know where I can buy replacement cartridges for imagitarium 29 gal undergravel filter
Answer: Yes, Amazon.
Question: Will this on fit my top fin 37 gallon tank 30L ×12w
Answer: Yes I have 2 of those aquariums and these fit perfectly.
Question: Do you need a regular filter if you have an underground filter
Answer: It really depends. If you have a small fish population that doesn’t produce a lot of waste then you can get by with just an under gravel filter. I do like adding a sponge filter or hang on the back filter to ensure I have good water circulation throughout the tank because stagnant water leads to algae buildup.

API NITRA-ZORB SIZE 6 Aquarium Canister Filter Filtration Pouch 1-Count Bag, Model:110A

API

Based on 1 reviews Check latest price

Product description

When left uncorrected, high nitrate in aquarium water can lead to water problems invisible to the eye, poor fish health and a build-up of organic pollutants. It is recommended to test water weekly. API NITRA-ZORB is a filtration media in a pouch format that works to remove harmful toxins, such as ammonia, nitrate, and nitrite, from freshwater aquariums. API NITRA-ZORB reduces the risk of fish loss when starting or maintaining an aquarium. API NITRA-ZORB can be reused after being recharged in a salt solution. Fits most canister filters on the market. Use as directed on product label. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.

  • Contains one API NITRA-ZORB SIZE 6 Aquarium Canister Filter Filtration Pouch 1-Count Bag
  • Removes toxins that can be harmful to fish and lead to algae growth.
  • Removes ammonia, nitrite, and nitrate from aquarium water.
  • Easy-to-use pre-dosed pouch fits most canister filters on the market, for use in freshwater aquariums
  • Use when starting a new aquarium and when ammonia or nitrite is detected, replace every 2 months.

User questions & answers

Question: Can this be used with Paraguard
Answer: Bleach the sponge filter, rinse well, and place it back in the tank. ( You can let the sponge dry so the bleach is ineffective ! ) My tank does not cycle when I use General Cure.
Question: Can I place this in the fish tank
Answer: I only remove chemical filter media. Like charcoal or chemipure if it’s mechanical or biological media keep it in the filter.
Question: Should i remove my carbon filter in order to use this one
Answer: 250 mg of Metronidazole, 75 mg praziquantel per packet
Question: I use a penguin bio wheel 170 filter system on my 29-gallon aquarium. where does the nitra-zorb pouch go
Answer: According to the instructions on the website for API you should turn off the UV sterilizer.

Product features

API NITRA-ZORB

A ready-to-use filter media pouch that can be added to your canister filter to remove ammonia, nitrite, and nitrate. NITRA-ZORB is made of natural and synthetic ion-exchange resins that selectively remove toxins from freshwater aquariums. Helps establish new aquariums by controlling the levels of ammonia, nitrite, and nitrate. Also for use in established aquariums whenever these compounds are detected.

API Makes it Simpler

Follow the API EASY CARE GUIDE steps to simplify aquarium care.

Water Problem Solving: When problems develop in an aquarium, it''s important to identify the problem and solve it quickly

API BIO-CHEM ZORB

Superior removal of synthetic and naturally occurring organic pollutants

Removes compounds that carbon alone cannot remove

Available in pouches and cartridges

For use in fresh, saltwater, and reef aquariums

API NITRATE TEST KIT

Tests Nitrate levels from 0 to 160ppm

For use in both fresh and saltwater

API PHOS-ZORB

Eliminates phosphates that cloud the water

Available in pouches and cartridges

For use in fresh water, salt water, and reef aquariums

Odyssea Clean 100 Surface Skimmer Aquarium Filter 450L Plant Internal

Odyssea

Based on 564 reviews Check latest price

Product description

Skims dissolved proteins to curb nutriet and film build up. This will improve water quality, oxygen exchange, and light penetration. Includes a 5W, 110GPH pump. Works with freshwater and saltwater aquariums. No additional part needed. 110V only.

  • Flow rate: 110 GPH
  • Energy efficient 5W pump
  • Skims surface build-up to improve water quality
  • Great for freshwater planted aquariums
  • Works with both freshwater and marine

User questions & answers

Question: What are the dimensions of this
Answer: top to bottom 6in. left to right 2.25in front to back 2in I use it as a skimmer only. it woks great on my 300+ tank. hope this helps.
Question: I bought one for my 55 gal aquarium. How can the drip tube on the side stays on? It just call off
Answer: I used some plumbers tape on mine. I had the same issue where it would just come off.
Question: Can you put in this the sump
Answer: I suppose you could hang it in a sump.
Question: Does this oper as stand alone or does it need to hook up to main filter
Answer: Stand alone. It does not need to be attached to a different filter.

AQQA Aquariums Power Filter,2W 80GPH External Hang On Fish Tank Sponge Filter with Surface Skimmer,Adjustable Flowrate 3-Step Filtration Cascade for Freshwater Saltwater Fish Tank

AQQA

Based on 19 reviews Check latest price

Product description

Welcome to AQQA🐟🐟

AQQA is a professional shop specializing in aquarium supplies and accessories,all products from this store the actual filming of goods please rest assured that you purchasers to buy!

We are determined to provide better product and better services to our customers.Our customer service is online 24 hours, providing pre-sale, sale, after-sale service, the product implements a free return policy, Free replacement within 3 months. If you have any questions, please feel free to contact us.

AQQA--Aquarium accessories,Quality Assurance



Product Description

🐟Product Name:AQQA Electric Power Hang On Filter

🐟Cord length:5.9FT

🐟Size:2W 80GPH

🐟Weight:464g

🐟Voltage:AC 110V/60Hz

🐟Pipe Length:4.1"-17.5"

🐟Suggest tank size:0-20gallon

🐟Package included:1*Filter



Filtering Process

①Filter the first layer:filter mesh + biochemical cotton,prevent aspiration small fish,filter out larger particles.

②Filter the second layer:Biochemical sponge + activated carbon + filter cotton 3-in-1 filter ,Deeply purify water quality, remove peculiar smell, filter out fine impurities.

③Filter the three layer:Surface Skimmer,Long-term effective removal of trash and oil on the water surface,with garbage collection room.



Product Advantages

🧊Environmental protection material

🧊Noise is less than 30db

🧊Energy saving and power saving

🧊Beautiful waterfall design,dissolved oxygen

🧊Easy to remove and wash

🧊Occupies a small area in the fish tank



Precautions For Use

1.Fill the water tank with water before use

2.At the beginning of operation, the air in the water pipe will be a bit noisy. When the water fills the water pipe and the air is discharged, it will be quiet.



WARRANTY

1-year free warranty.



If you have any questions, please contact us, wish shopping happy😘😘

  • 🧊【Upgrade Power Sponge Filter】No need air pump, strong horse-power 2W 80GPH, can quickly purify fish tank water quality.waterfall type water flow design,Not only increase the aesthetics of the fish tank, but also increase the dissolved oxygen.External hang on by the fish tank,take up less space in the fish tank, leaving more room for the fish.
  • 🧊【3-Step Filtration】The biochemical sponge at the water inlet prevents the inhalation of sand and fish.The inhaled water carries fish poop and other impurities,It passes through a layer of biochemical sponge, a layer of activated carbon media, and a layer of professional filter cotton to achieve the function of evolving water quality.The filter layer can be replaced, and the store has separate filter layer for sale.
  • 🧊【Set with Oil Surface Skimmer】surface skimmer can be assembled freely, installed or removed.Our surface skimmer no need to adjust according to the water surface, it will automatically float on the water surface, change according to the water level change, remove the impurities and oil surface on the water surface.If it is not needed, just plug the installation hole.
  • 🧊【Adjustable Water Pipe+Extended Pipes】The length of the water pipe can be adjusted freely to adapt to fish tanks of various heights,With extension tube, it can be installed freely according to the height of the fish tank.Outer water tank with level governor,Used to adapt to the thickness of different fish tanks and keep the filter vertical.
  • 🧊【Precautions Before Use】Our filter is very quiet and the noise is less than 30db,Please fill the water tank with water before use to drive the water pump to pump water.When you start to use it, if there is air in the water pipe, it will make some noise. When the air in the water pipe is discharged, it will be very quiet.We have a one-year warranty, please contact us if you have any questions.

User questions & answers

Question: Will this surface skimmer float around with the water
Answer: Well I have been using the filter for about 3 months and I never had the yellow tint. The way I have it set up is (from the bottom up) :Tray 5- black sponge Tray 4- bio ballsTray 3- bio ballsTray 2- the ceramic rings it came withTray 1- white sponges and chemi-pure elite on top.It seems to keep my saltwater tank pretty clear.
Question: Is it easy to replace this biochemical cotton
Answer: Yes - it's a U.S. plug :)
Question: Where can I buy the filter replacement
Answer: I'm using same tank and everything works great in smallest/shortest configuration
Question: How long can a piece of biochemical cotton be used
Answer: My 350 has 3/4 O.D and 5/8TH I.D tubing on both inlet and outlet side of filter back to tank

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