14 best goldfish filters
Goldfish filters are essential components of aquarium systems designed to maintain water quality and keep the aquatic environment healthy for goldfish and other fish species. Here's what you need to know about goldfish filters:
Filtration Types: There are several types of filters used in goldfish aquariums, including:
- Mechanical Filters: These filters physically remove debris and particles from the water. Common mechanical filters include sponge filters and filter pads.
- Biological Filters: Biological filters use beneficial bacteria to break down ammonia and nitrite, which are harmful to fish. These filters often have a medium, such as ceramic rings or bio-balls, where bacteria can colonize.
- Chemical Filters: Chemical filters, such as activated carbon, can remove impurities and odors from the water.
Filter Size: The size of the filter should be appropriate for the size of the aquarium and the number of goldfish. Goldfish produce more waste than many other fish species, so a filter with a higher capacity may be necessary for larger goldfish or larger aquariums.
Water Flow: Goldfish prefer moderate water flow, so it's important to choose a filter that provides adequate filtration without creating too strong a current. High-flow filters can stress goldfish and disrupt their swimming.
Filter Maintenance: Regular maintenance is essential to ensure the filter functions correctly. This includes cleaning mechanical filter media, replacing chemical filter media when it's exhausted, and occasionally rinsing biological filter media in dechlorinated water (to avoid killing beneficial bacteria).
Filter Placement: Filters should be positioned in a way that ensures even water circulation throughout the aquarium. Proper placement helps distribute oxygen and filter out impurities effectively.
Filter Noise: Some filters can be noisy, which can be bothersome in quiet environments. If noise is a concern, consider choosing a filter known for quiet operation.
Filter Types: Common filter types for goldfish tanks include hang-on-back (HOB) filters, canister filters, internal filters, and sponge filters. Each type has its advantages and can be chosen based on the specific needs of your goldfish and aquarium setup.
Cycling: When setting up a new aquarium or introducing new goldfish, it's crucial to cycle the filter. Cycling establishes a colony of beneficial bacteria that can break down ammonia and nitrite, making the aquarium safe for fish.
Water Testing: Regularly test the water parameters, including ammonia, nitrite, nitrate, pH, and water hardness, to ensure the filter is maintaining proper water quality.
Compatibility: Consider the compatibility of the filter with your aquarium size, fish load, and any other equipment you may have, such as heaters and air pumps.
Choosing the right goldfish filter and maintaining it properly is essential for the well-being of your goldfish and the overall health of your aquarium ecosystem.It helps to consult with a knowledgeable aquarium specialist or pet store staff when selecting the best filter for your specific setup.
Below you can find our editor's choice of the best goldfish filters on the market
Marina Bio Clear Cartridge for Slim Filters 36pk (12 x 3pk)
Hagen
Product description
Ideal for goldfish, the filter cartridge contains zeolite and Ceramitek for optimum filtration and a healthy aquarium. The zeolite effectively adsorbs toxic ammonia and reduces stress on fish, while the Ceramitek, a highly porous ceramic biological filter medium, optimizes biological filtration. The easy-to-use disposable cartridge should be replaced every two weeks for best results. Never replace all filter cartridges at the same time to ensure a constant presence of beneficial bacteria.
- 36 total Bio-Clear replacement cartridges for Marina Slim Power Filter
- Ideal for goldfish, they contain zeolite and Ceramitek for optimum filtration
- Zeolite effectively absorbs toxic ammonia and reduces stress on fish in your tank
- Ceramitek, a highly porous, ceramic biological filter medium, optimizes biological filtration to support the growth of good bacteria
- These genuine replacement filter cartridges are specifically designed for use in the Marina Slim S10, S15 or S20 aquatic filter
User questions & answers
| Question: | Why side 1 on filter |
| Answer: | Yes, but it may sit a little further out. The back of the wall is hallow, so there is some room, but not enough. Should still look good. |
| Question: | What does the 1x or 3x mean at the bottom of the package? Thank You |
| Answer: | No, it’s made specifically for the Fluval Edge aquarium. |
Hagen 15-Pack Marina Slim Aquarium Water Filter with Zeolite Plus Ceramic Cartridge
Monster Pets
Product description
Marina Slim Filter Bio-Clear is a genuine replacement cartridge for all three Marina Slim Filter Models (S10, S15, S20). Ideal for goldfish, the filter cartridge contains zeolite and Ceramitek for optimum filtration and a healthy aquarium. The zeolite effectively adsorbs toxic ammonia and reduces stress on fish, while the Ceramitek, a highly porous ceramic biological filter medium, optimizes biological filtration. The easy-to-use disposable cartridge should be replaced every two weeks for best results. Never replace all filter cartridges at the same time to ensure a constant presence of beneficial bacteria.
- 15 Count Bio Clear Cartridges for Slim Filters
- Best for goldfish and ideal for start-up fish tanks
- Zeolite effectively adsorbs toxic ammonia and reduces stress on fish
- Ceramitek, a highly porous ceramic biological filter medium, optimizes biological filtration
- Genuine replacement filter cartridges for all 3 Marina Slim Aquarium Filter Models (S10, S15, S20)
User questions & answers
| Question: | This is the first time I'm buying this type of filter. Does the 15-pack consist of fifteen of 3 filters per pack with a total of 45 filters |
| Answer: | No, the pots are part of the wall and can’t be removed |
| Question: | How often do we replace it |
| Answer: | We only ship within the U.S. |
Marina Slim Filter Zeolite Plus Ceramic Cartridge
Marina
Product description
The Marina Slim Filter Zeolite Plus Ceramic Cartridge combines Zeolite and Ceramitek in one cartridge for a healthy aquarium. The Zeolite effectively adsorbs toxic ammonia and reduces stress on fish, while the Ceramitek, a highly porous ceramic biological filter medium optimizes biological filtration. The easy-to-use disposable cartridge should be replaced every two weeks. Never replace all filter cartridges at the same time in order to ensure constant presence of beneficial bacteria. The Marina Slim Filter Zeolite Plus Ceramic is best used in goldfish aquariums.
- Absorbs toxic ammonia and reduces fish stress
- Contains Ceramitek, a highly porous ceramic biological filter medium
- 3-pack; Easy to replace
- Fits the Marina S10, S15 and S20 Slim Filters
User questions & answers
| Question: | Are these 3 inches wide |
| Answer: | Yes, each pack contains 3 filters. A total of 45. |
| Question: | can this filter work in other filter systems, like the Tetra Whisper |
| Answer: | mine is a 10 gallon tank (2 neon fish, 2 bottom feeder). I replace it once a month. |
| Question: | What if you have a 5 gallon tank with guppies, can you use one filter cartridge at a time instead of |
| Answer: | I believe it’s because one side is filter material and the other is the charcoal. The water passes through the filter material first catching debris then charcoal. |
| Question: | Are these the replacement cartridges |
| Answer: | It counts the number of filters in a package. There are three filters in a 3x package. |
Bestgle Aquarium Mini Filter Goldfish Bowl Beta Fish Tank All Water Type Corner Filter with Triple Filtration System Blue
bestgle
Product description
Sponge filter provides both mechanical and biological filtration. Aerobic bacteria colonize the sponge, providing a bacterial substrate to facilitate the nitrogen cycle.
In addition, the sponge traps larger waste particles, mechanically cleaning the water.
Description:
Color: Blue
Material: ABS Plastic
Dimension: 8cm*8cm*8cm / 3.15 inch*3.15 inch* 3.15 inch
Compatible for small aquariums, need to use with an air pump and air tube (Not Included)
With elegant appearance, economical and functional
Features:
Supply the water with much needed oxygen
Reduce noise from air pump and consume lowest wattage
Multi-layer media, easy to move and clean
Easy-to use biological filter for tropical aquarium fish
Package Includes:
1* Blue Fish Tank Filter
- Triple filtration system: cotton filters, quartz stand & activated carbon
- This mini filter is very suitable for small fish tank of 40cm/15.7” length or less to use
- Easy to clean and spit; Need to connect with air pump and air tube (Not Included)
- No separate electricity, air pump connected to an air outlet port, directly into the fish tank to use
- Sand can block lots of particles in the water, sponge can absorb large amounts of residual material, charcoal makes water more clear. Bubble stone blown fresh air will lead to clean water, giving your fish to create a healthy environment for the growth
User questions & answers
| Question: | Do is there's a replacement filter |
| Answer: | I switched filters and no longer use these. I don'the have an old one to measure. Sorry. |
| Question: | How large of an aquarium will this filter? The dimensions don’t help me much |
| Answer: | No this is for the marina filters |
| Question: | Does this filter without a pump |
| Answer: | The problem would be that there would be a large empty space where the second filter goes, that would let debris flow through. I think it's best to always have the 2 cartridges in place to make sure all the debris is collected. |
| Question: | Is this too powerful for for a betta |
| Answer: | Yes they are!! |
CoutureBridal Mini Filter Air Pumps Aquarium Goldfish Bowl Fish Tank All Water Type Corner Filter Strainer Easy to Use Air Pump (Blue)
Product description
Specification:
The combined use of air pumps can increase the oxygen level in the water, achieve oxygenation and dual biological filtration, and keep the water clean.
Feature:
Size: 8X8X5.5CM (3.15X.3.15X2.16inch)
Weight:180g
Color: blue green white
Material: Plastic
Package Content:
1PC Mini strainer
Note:
Due to manual measurement, please allow measurement deviation of 1-2cm.
Due to differences between monitors, the picture may not reflect the actual colors of the item. Thank you!
- The combined use of air pumps can increase the oxygen level in the water, achieve oxygenation and dual biological filtration, and keep the water clean.
- This mini filter is very suitable for small fish tank to use Easy to clean, Need to connect with air pump and air tube (Not Included)
- No separate electricity, air pump connected to an air outlet port, directly into the fish tank to use
- Sand can block lots of particles in the water, sponge can absorb large amounts of residual material, charcoal makes water more clear.
- Bubble stone blown fresh air will lead to clean water, giving your fish to create a healthy environment for the growth.
All in One Filtration System to Fight Green Water Algae Pond Filter Kit with Heavy Duty Pump Suitable for Pond with Koi and Goldfish up to 7,000 gallons, Eco Friendly.
Product description
You can easily make this yourself. I made this kit because I tried many different pond chemicals and pond filters and non of them cleared my pond water. Actually one summer most of my Koi died from the "fish safe chemicals". After that I promised not to use any chemicals in my pond. I tried many different kits and non of them worked. Finally to my surprise this kit worked. I can see my black Koi fish at the bottom of my pond. If I stop one fish from getting harmed from "fish safe chemicals" I have reached my goal. If you purchase my kit and you're not satisfied you can simply return it within 30 days of your purchase and receive a full refund.
- Pond Filter Kit with Heavy Duty Pump
- Suitable for pond with Koi and Goldfish up to 7,000 gallons
- Product dimensions: 12" x 12" x 10"
- Eco friendly, No chemicals
- Your pond water will be crystal clear in a few days
User questions & answers
| Question: | Is it easy to install |
| Answer: | No, not terribly sure why. It lasts around a month and a half. At this price it's not totally unreasonable to replace it that often, but that's up to you. |
| Question: | Do you leave this in your pond continuously |
| Answer: | it will fit in a fish bowl |
| Question: | Can we change the water using this pump |
| Answer: | No, you need a pump to run it. |
| Question: | What pump goes with this kit looks like a sump pump |
| Answer: | This filter is a passive device. By that I mean it has no power itself. You apply power to it via an airline connected to a pump. If the pump you apply has too much power, you "dial it down" with a simple in-line air valve. |
CerMedia MarinePure MP2C Bio-Filter Media for Koi and Goldfish Ponds, 1/2 Cubic Feet
CerMedia MarinePure
Product description
Ceramic Bio-Filter Media with Vast Surface Area and Open-Flow Porosity. Designed for ammonia & nitrite removal; 2" cubes designed for the high flow of Koi & Goldfish ponds and recirculating aquaculture systems; Use extra-large filters and shower filters. Product is loose packed in box.
- Ceramic Bio-filter Media with Vast Surface Area AND Open-Flow Porosity
- Ammonia and Nitrite Removal
- Nitrate Reduction
- Inert Ceramic
- For Koi and Goldfish ponds
User questions & answers
| Question: | Is 7" x 7" x 9" the actual size of the shipped product? It says 1/2 cubic foot, by my math 7x7x9 is only 0.2552083333333334 cubic feet |
| Answer: | You can take it out once your pond is nice and clear. I leave mine in because my fish like to play in the water pressure coming out of the hose. |
| Question: | How many 2 inch cubes do you actually get |
| Answer: | Yes the pump is a regular 1/3 horsepower submersible pump. You can use it for different purposes. Be careful not getting too much sludge in it and burning the pump. |
| Question: | Approximately how many cubes do u get |
| Answer: | It's an all in 1 pump/filter. I have not had luck with it keeping pond from turning green though. The pump works amazingly, as I've had to drain pond 2xs in the week I started using. |
Animal Face Mask for Men Women Breathable Bandana Face Mask Adjustable Ear Loops with Filter Pocket
Product description
Polyester Washable Face Cover Reusable Breathable Bandanas
Protect You From Bugs, Dust, Sunshine, Spray, Wind, And Others.
Washable And Reusable Soft Fabric Fashion Shield/ Wash It Before You Wear It
MATERIAL: Polyester Fabric.
WASHABLE: Breathable, Reusable And Washable.
ANTI-DUST: Wearing This Face Mouth Mask, You Could Be Protected From Dust, Small Particles On Air, Pollen And Much More.
Unique Design: Custom Face Mask, Fashion Face Mask. Best Gift For Kids, Teens And Adults.
Tips:
Please Check The Size Before You Purchase It.
We Recommend Washing The Mask Before Wearing It.
The Ear Loops Will Be Stretched But It Feels Tight When You Wear It First.
Hand Wash Recommended ( With Cold Water / Do Not Bleach / Hang Or Line Dry).
- High-Quality Polyester made, Soft and Breathable, the Quick-Dry Fabric Keeps you Cool.(Pattern Customization Can Be Supported)
- Protect Your Mouth And Face From Dust, Cold, Dust, Pollen, Allergies, Fog And Haze, Exhaust Emissions, Passive Smoking, Etc.
- One Size Fits For Most People With Stretchy Adjustable Ear Loops For Closely Fit, Easy To Wear And Off.Personality pattern, show your style!
- Perfect for music festivals,concerts,carnivals,biking,running, raves,cycling,climbing,skiing,trekking,hiking, hunting or any other outdoor activities Etc.
- Easy to care: This custom mask is washable and reusable. Cleaning will not reduce the dust-proof effect and is more economical than disposable masks. With Inner Pocket Can Hold Filter (Note: The Mask Doesn't include a filter)
Ruduwu Face Mask Be A Goldfish - Ted Lasso Adjustable Bandanas Reusable Unisex Filter Ear Strap Black for Adult
Ruduwu
Product description
Suitable for all kinds of sports, exercise, training, cycling, camping, running, traveling, rock climbing, motorcycle helmet bushing and daily use. Protect you from fog, haze, dust, vehicle exhaust, passive smoking, etc
- 100% Polyester
- Size: One Size For Most
- Material: Made Of High-Quality 100% Polyester Fiber Fabric, Very Comfortable And Easy To Wear
- Application: Suitable For All Kinds Of Traveling, Running, Hiking, Sports, Buses, Etc. Motorcycle Helmet Bushing And Daily Use
- Ideal Choice: Your Health Is Pricel And Ideal. Stylish And Suitable As A Gift
- Washing: Washable And Reusable, Long-term Washing Does Not Deform
Adventure Awaits Cloth Face Mask with Filter Pocket Nose Wire Adjustable Ear Loops
FPSMOUPD
Product description
100% polyester. Soft, breathable, waterproof and washable.
Nose wire Cloth Face Mask with filter pocket (includes 2 replacement filters).
Unisex and stylish design, features an adjustable nosepiece that you can form to the contours of your face. Comfortable and adjustable ear hooks eliminate ear pressure.
Reusable and washable cloth mask can be used by both children and adults. Protect your mouth and face from dust, cold, pollen, smog, exhaust, smoke, etc. Suitable for cycling, camping, running, traveling, climbing and daily use.
Your satisfaction is our passion! Please feel free to contact us if you have any questions. We will do our best to solve your problem to ensure you get the best shopping experience.
- Imported. Material: 100% polyester.
- Size: S 6.9"x5.1"(17.5x13 cm); M 7.9"x5.9"(20x15 cm). Fits most adults and kids. Please select the desired size.
- Adjustable: Adjustable ear loops and nose wire for a snug fit and enhanced security. Filter pocket included for adding extra protection.
- Excellent Performence: Face cover includes 2 replacement filters. Keeping you away from air particles and pollutants. Help preventing coughing and sneezing water from entering the nose and mouth.
- Reusable and Washable: Selected reusable, washable and breathable fabric materials, is the first choice for shopping, running, climbing and traveling.
Aquarium Fish (Collins Gem)
3 Pack) Marina Slim Filter Zeolite Plus Ceramic Cartridge, 3 Cartridges each
Marina
Product description
The Marina Slim Filter Zeolite Plus Ceramic Cartridge combines Zeolite and Ceramitek in one cartridge for a healthy aquarium. The Zeolite effectively adsorbs toxic ammonia and reduces stress on fish, while the Ceramitek, a highly porous ceramic biological filter medium optimizes biological filtration. The easy-to-use disposable cartridge should be replaced every two weeks. Never replace all filter cartridges at the same time in order to ensure constant presence of beneficial bacteria. The Marina Slim Filter Zeolite Plus Ceramic is best used in goldfish aquariums.
- 9 total replacement cartridges
- The ideal form of filtration for goldfish tanks
- Designed for Marina S10, S15, and S20 Power Filters
- Cartridges combine Zeolite with Ceramitek to purify water and preserve fish health
- The Zeolite effectively adsorbs toxic ammonia and reduces stress on fish, while the Ceramitek, a highly porous ceramic biological filter medium optimizes biological filtration
User questions & answers
| Question: | Do I need both of these filters |
| Answer: | Your right about the math. However, my shipment came in a 9" x 9" x 12" box, not quite to the top, say 8" x 9" x 12" = 0.5 cubic ft. Of course some of that volume is the airspace between the roughly 2" cubic peices. |
| Question: | Does this cartridge have carbon in it |
| Answer: | That varies a bit per box. |
| Question: | Will this be okay to use while treating ick or does it remove the medicine from the tank |
| Answer: | In my box there were 74 and 1/3 "cubes". None of the blocks are perfectly cubed. There are many irregular "cubes". Some are smaller, and some are larger blocks. |
| Question: | Should you use these if you have guppies |
| Answer: | Yes very easy. The only problem is, is it doesn't keep the water from turning green. |
Hffheer Aquarium Filter Mini Fish Tank Filter Sponge Ultra-Thin Round Filter Water Hydroponic Oxygen Plate Pneumatic Filter for Fish Tank Turtle Tank
Hffheer
Product description
Specification:
Material: Plastic
S: (Dia*H) 8*5.5cm / 3.15*2.17 inch
L: (Dia*H) 10.5*5.5cm / 4.13*2.17 inch
Package Included:
1 x Aquarium Filter
- 【Double Filtration】The bottom of the filte is a layer of biochemical ball, covered with a layer of filter cotton. It also has physical and biochemical filtering capabilities.Air stone inside, more surface area for beneficial bacterial to colonize and faster cycling, keep your fish tank clear and clean.
- 【Ultra-Thin Design】Innovative ultra-thin design, save space inside the aquarium tank, more beautiful.
- 【Wide Application】Suitable for shrimp tank, betta tank, breeder tank, goldfish, discus, guppies, fry, baby fish or other fish.
- 【Easy to Set Up】Simply install an airline into the unit and turn on the air pump, great way to clean and oxygenate your tanks; Easy to clean: simply squeeze the sponges in tank water.
- 【More Bubble】High density design will offer homogeneous and much more bubble. refining bubble will be a scenery for your aquarium as well.
Hagen Marina Slim Filter Zeolite Plus Ceramic Cartridge for Aquarium, 3 count (12 Pack)
Hagen
Product description
The Marina Slim Filter Zeolite Plus Ceramic Cartridge combines Zeolite and Ceramitek in one cartridge for a healthy aquarium. The Zeolite effectively adsorbs toxic ammonia and reduces stress on fish, while the Ceramitek, a highly porous ceramic biological filter medium optimizes biological filtration. The easy-to-use disposable cartridge should be replaced every two weeks. Never replace all filter cartridges at the same time in order to ensure constant presence of beneficial bacteria. The Marina Slim Filter Zeolite Plus Ceramic is best used in goldfish aquariums.
- Convenient 36 pack (12) 3pks
- Absorbs toxic ammonia and reduces fish stress
- Fits the Marina S10; S15 and S20 Slim Filters
- Contains Ceramitek; a highly porous ceramic biological filter medium
User questions & answers
| Question: | Is anyone else having problems with these filters causing the water to be cloudy? I've never had this problem with past filters |
| Answer: | I do......have 2 guppies |
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