12 best sun canister filters

However, in the context of aquariums and fishkeeping, canister filters are a commonly used type of filtration system. Canister filters are known for their effectiveness in maintaining water quality in aquariums. They consist of a sealed container (canister) that houses various filter media and a pump. Here are some general points about canister filters:

  1. Filtration: Canister filters typically use multiple stages of filtration to remove impurities from aquarium water.These stages often include mechanical filtration (to remove debris), biological filtration (to promote beneficial bacteria growth), and chemical filtration (to remove specific pollutants).

  2. Water Flow: Canister filters provide a strong and consistent water flow, which is beneficial for larger aquariums or tanks with demanding filtration needs. They can handle a high volume of water efficiently.

  3. Versatility: Canister filters are suitable for both freshwater and saltwater aquariums. They can be customized with different types of filter media to address specific water quality issues.

  4. External Placement: Unlike some other filter types that are submerged in the aquarium, canister filters are placed outside the tank. This frees up space within the aquarium and allows for easier maintenance.

  5. Maintenance: Canister filters require periodic maintenance, including cleaning and replacing filter media. However, their design makes maintenance relatively straightforward.

  6. Sizing: Canister filters come in various sizes, allowing aquarists to choose the appropriate model based on the size of their aquarium and the filtration requirements of their fish and aquatic life.

  7. Quiet Operation: Many canister filters are designed to operate quietly, minimizing disturbance in the aquarium environment.

When selecting a canister filter for your aquarium, it's essential to consider the size of your tank, the type of fish and aquatic life you keep, and the specific water quality concerns you may have. Different canister filters may offer various features and filtration capacities, so it's important to choose one that suits your needs and budget.

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

Sunsun Hw304B 525GPH Pro Canister Filter Kit with 9-watt UV Sterilizer

SunSun

Based on 803 reviews Check latest price

Product description

The SunSun HW-304B external 5-stage canister filter with built in UV sterilizer is ideal for tanks up to 150 gallon freshwater or saltwater aquarium. It is capable of handling up to 525 gallons per hour with 4 flexible media trays that allow you to add your media such as SunSun's activated carbons, ceramic rings or bio-balls (incldued) to achieve excellent mechanical, chemical and biological filtration. The HW-304B has a built in 9 Watt UV sterilizer to help kill algae spores and bacteria, promoting clear crystal water. The HW-304B canister filter also has a convenient self-priming pump that eliminates the need for manual siphoning.

  • HW-304B Pro Filtration Kit, Good for up to 150 gallon aquariums
  • Flow rate: 525 GPH (2000L/Hr)
  • Dimension: 11" L X 11" W X 17" H
  • Pro Kit Includes Canister Filter w/9 Watt UV, 4 White Filter Pads, 1 Blue Coarse Pad, 4 Media Baskets
  • Includes 1lb of Premium Filter Carbon, 1lb of Ceramic Rings and 1 Set of Bio Balls

User questions & answers

Question: can I order the media basket the filters are placed in
Answer: yes I believe you can order replacement baskets from Amazon.
Question: Hello. is there sunsun hw-304b 220v
Answer: No
Question: Does anyone have a problem getting this to work in a tank that isn't full? I filled the tank to prime then removed water & it stopped working
Answer: You definitely want to pre fill the filter before starting it up (if you cant prime it hoses might be mixed up-suction return lines) I would also make sure the return tube is fully submerged at the top of the water. I personally have three 304b filters, one of them gives me issues like yours if the outlet tube isn't covered with water.
Question: How do i know if my uv light is working? i put the filter together recently but i don't know if the light is turning on
Answer: There's a little round button nest to the on off switch. It is actually not a bitton so dont press down on it. It is a window that will show when the light inside the filter is on.

Product features

SunSun HW-304B Pro Canister Filter

Includes: Filter Media, 3 White Filter Pads, 1 Blue Coarse Pad.

Excellent for Freshwater and Saltwater Aquariums

The SunSun HW-304B 5-Stage External Canister Filter with a built-in UV sterilizer is ideal for tanks up to 150 gallons. It is capable of handling up to 525 gallons per hour with flexible media trays that allow you to add your media such as SunSun's activated carbons, ceramic rings, or bio-balls to achieve excellent mechanical, chemical, and biological filtration. The HW-304B has a built in 9-Watt UV sterilizer to help kill algae spores and bacteria. The UV sterilizer also promotes clear crystal water. The HW-304B canister filter also has a convenient self-priming pump that eliminates the need for manual siphoning.

Filter Media Included

Filter media improves water clarity, color, and odor. Porous ceramic rings provide an ideal growing site for beneficial bacteria. Bio-balls promote gas exchange and increase dissolved oxygen levels. Filter media will not affect water characteristics. Filter media is also great for SunSun HW Canisters or any other filters.

SunSun Sun HW-704B 525 GPH 5-Stage External Canister Filter with 9W Uv Sterilizer

SunSun

Based on 370 reviews Check latest price

Product description

The new 2016 SUN HW-704B external aquarium Filter system utilizes a multi-stage approach to filtration. Filtering aquarium tank water through four internal layered baskets filled with assorted filter media material provides extremely thorough biological, mechanical and chemical filtration. This canister draws water into the filter through an inlet tube and returns crystal clear water via an outlet tube (both supplied). the outlet tube is fitted with a spray-bar to help increase oxygen aeration levels within your tank. These filters are absolutely ideal for freeing-up space within your tank and provide a huge internal capacity for filter media, making them suitable for larger volume tanks. The four flexible media trays allow you to add other filtration media such as SUN activated carbons, ceramic rings or bio-balls (sold separately). by filtering your tank using the filter media, you will observe a vastly improved level of waste-free water through extremely strong biological purification. The filter's easy-access layered filter media basket's make it simple to customize your media choices to suit your aquarium and fish livestock needs. The built in UV sterilizer exposes passing water to lethal doses of Ultraviolet light, killing, sterilizing or otherwise irreparably damaging many micro-organisms. Your fish tank water is pumped past the UV light which is sealed inside a quartz glass sleeve which is designed to allow the maximum amount of UV to pass through the water. Maintaining the filter is very simple. The drip-free shut-off tap allows you to remove the filter and transport It away from your aquarium fish tank to an area more suitable for cleaning. Each filter media basket lifts smoothly out of the unit and can be easily rinsed through and returned to continue its operation.

  • 5 stages with 9W UV, 525GPH (2000Lph)
  • Good for up to 150 gallon fish tanks
  • Dimension: 12" L x 12" W x 18" H
  • Built in 9 watt UV sterilizer for controlling algae spores/bacteria and promoting clear water
  • 4 Large media baskets for all your media need

User questions & answers

Question: what is the tube ID dimension
Answer: With hoses attached it would be very, very tight if it was me I would not use this cabinet. You need no less than 22 to 23 inches in height.
Question: I live on the 2nd floor in an apartment building. We have frequent power outages that last from 2 seconds to .5 hour. Will this leak all over
Answer: Yes it does but you must use the internal pump for the sterilizer to come on .
Question: Why can't I find sunsun 704b replacement parts
Answer: I put the bio balls in first. then the ceramic. finally the filter pads in the same layer. i only use 3 stages leaving room for something else like carbon bags. i love mine it works great.. very quiet so when you start to hear a very minimal hum coming from your tank it is time to clean it. and finally make sure you have a towel with you when cleaning it you will lose a very small (2-4 ounces) amount of water when you disconnect it.
Question: What is different from the sunsun hw304B? Other than the shape of course
Answer: No, the flow can't be adjusted. Actually it doesn't even have a power switch but turns on by unit being plugged into electrical outlet

Product features

SunSun HW-704B External Canister Filter
Excellent for Freshwater and Saltwater Aquariums

The SunSun HW-704B External Aquarium Filter system utilizes a multi-stage approach to filtration. Filtering aquarium tank water through four internal layered baskets filled with assorted filter media material provides extremely thorough biological, mechanical and chemical filtration. This Canister draws water into the filter through an inlet tube and returns crystal clear water via an outlet tube (both supplied). The outlet tube is fitted with a spray-bar to help increase oxygen aeration levels within your tank.

Add Filter Media (Sold Separately)

Filter media improves water clarity, color, and odor. Porous ceramic rings provide an ideal growing site for beneficial bacteria. Bio-balls promote gas exchange and increase dissolved oxygen levels. Filter media will not affect water characteristics. Filter media is also great for SunSun HW Canisters or any other filters.

Sunsun HW704B 525Gph Pro Canister Filter Kit with 9W Uv Sterilizer

SUNSUN

Based on 291 reviews Check latest price

Product description

The all new SunSun HW-704B external aquarium Filter system utilizes a multi-stage approach to filtration. Filtering aquarium tank water through four internal layered baskets filled with assorted filter media material provides extremely thorough biological, mechanical and chemical filtration. This canister draws water into the filter through an inlet tube and returns crystal clear water via an outlet tube (both supplied). the outlet tube is fitted with a spray-bar to help increase oxygen aeration levels within your tank. These filters are absolutely ideal for freeing-up space within your tank and provide a huge internal capacity for filter media, making them suitable for larger volume tanks. The four flexible media trays allow you to add other filtration media such as SunSun activated carbons, ceramic rings or bio-balls (included). by filtering your tank using the filter media, you will observe a vastly improved level of waste-free water through extremely strong biological purification. The filter's easy-access layered filter media basket's make it simple to customize your media choices to suit your aquarium and fish livestock needs. The built-in UV sterilizer exposes passing water to lethal doses of Ultraviolet light, killing, sterilizing or otherwise irreparably damaging many micro-organisms. Your fish tank water is pumped past the UV light which is sealed inside a quartz glass sleeve which is designed to allow the maximum amount of UV to pass through the water. Maintaining the filter is very simple. The drip-free shut-off tap allows you to remove the filter and transport It away from your aquarium fish tank to an area more suitable for cleaning. Each filter media basket lifts smoothly out of the unit and can be easily rinsed through and returned to continue its operation. Refer instruction manual for troubleshooting steps.

  • 5-Stage Aquarium canister filters at a Great hobby-friendly Value, 525GPH
  • Integrated 9W UV sterilization to eradicate unwanted algae and harmful disease causing pathogens
  • Provides quiet, efficient filtration for fresh and Saltwater aquariums
  • 4 Large media baskets for all your media need, Pro media kits included
  • Dimension: 12" L x 12" W x 18" H, 110-120V, US plug

User questions & answers

Question: Is this suitable for exposure to elements outside
Answer: It’s a well made product and I’m sure it couldn’t withstand a bit of outdoor exposure. I’d say as long as the plug is not submerged I’d give it a shot for sure.
Question: What type of tubing comes with it? The old style as shown or the new clamps Fluval type for both intake and output
Answer: There the old style. About 3 feet of rubber hose, then the half loop hard line, to the spray bar on the out take, and basic filter intake tube.
Question: What the return policy on this item
Answer: I an issue.. thought there was no power...false alarm but they agreed to replace the canister hood...asap in their response..
Question: What side is the intake filter on? My old canister had them marked
Answer: The intakes are marked on the top of the 704b top

AQUANEAT Replacement Canister Filter Pads Compatible to SUNSUN HW-304B/404B/704B/3000 CF500 Generic Filter Floss Aquarium Filter Media

AQUANEAT

Based on 842 reviews Check latest price

Product description

Features:

Generic pads for SUNSUN Canister filters HW-304B/404B/704B, HW-3000, Polar Aurora 525gph, Aquatop CF-500.

4x sponge bio filter pads (1xCoarse, 2xMedium, 1xFine): trap most visible debris particles without restricting water flow. (Reusable after rinsed)

12 pcs of white floss pads: Filter out fine particles providing crystal clear water.

Provides both mechanical and biological filtration

Tips for Usage and Maintenance:

Maintenance of Sponges:

The sponge will need to be rinsed every time it becomes dirty, about once every 1 to 4 weeks.

After 6 to 12 months’ usage, the micro holes of sponge are gradually clogged by the tiny debris. So it is also recommended to replace the sponge once 6 to 12 months or when the sponge gets worn out.

  • Generic pads for SUNSUN Canister filters HW-304B/404B/704B, HW-3000, Polar Aurora 525gph, Aquatop CF-500.
  • 4x sponge bio filter pads (1xCoarse, 2xMedium, 1xFine): trap most visible debris particles without restricting water flow. (Reusable after rinsed)
  • 12 pcs of white floss pads: Filter out fine particles providing crystal clear water.
  • Provides both mechanical and biological filtration.
  • Includes: 1xcoarse (Blue), 2x medium (Green), 1xfine (Black) + 12 floss filter pads (White)

User questions & answers

Question: Will this fit 402b sunsun canaster filter
Answer: Now sure but I assume might I used it for a different model then sunsun but was 302
Question: Will these work with the Penn plax Cascade
Answer: Not sure. Have a SunSun but they were too small
Question: I have a 4 stage and not sure which way the pads go from bottom to top
Answer: I have a 5 stage, but it's the same,.. ; On the very bottom tray it gets two filters, course (colored, or black filter) under a white fine filter. That's it! But I line every tray upperwards with a with white (fine) filter. I can ring out the course filter many times before I feel like it needs to be replaced, but the white ones I only ring out once before replacing when I clean my 35gal fish tank every 3 to 4 months. Use API BIO-CHEM ZORB SIZE 6 Aquarium Canister Filter Filtration pouch in place of the nitrogen emitting charcoal, your fish will be more healthy, happy, live longer and it'll keep the yellow tint out of your water and keep your tank crystal clear. Good luck!
Question: Will this fit polar HW 304B
Answer: Yes, these fit polar HW 304B.

AQUANEAT Replacement Filter Pads Compatible to Canister SUNSUN HW-304B/404B/704B/3000 CF500 Activated Carbon/Phosphate/Ammonia Aquarium Fish Filter Media

AQUANEAT

Based on 210 reviews Check latest price

Product description

Features:

Compatible to SUNSUN Canister filter HW-304B/404B/704B/3000 Polar Aurora 525gph, aquatopCF-500.

4x sponge bio filter pads (1xCoarse, 2xmedium, 1xfine): trap most visible debris particles without restricting water flow. (Reusable after rinsed)

2 pcs activated carbon + 1 pc Ammonia + 1 pc Phosphate Remover filter pad: remove water discoloration, odor, and dissolved fish waste.

8 pcs of white floss pads: Filter out fine particles providing crystal clear water.

Provides mechanical, biological and chemical filtration.

Includes: 4x sponge bio filter pads (1xCoarse, 2xmedium, 1x fine), 4x bonus filter pads (2x activated carbon, 1x Ammonia, 1x Phosphate Remover), 8x floss filter pads

Includes:

4x sponge bio filter pads (1xCoarse, 2xmedium, 1xfine)

4x bonus filter pads (2x activated carbon, 1x Ammonia, 1x Phosphate Remover filter pad)

8x floss filter pads

Tips for Usage and Maintenance:

Replacement frequency depends on the bio-load in the tank. The more fish you have, the more frequently a pad should be replaced.

Maintenance of Sponges:

The sponge will need to be rinsed every time it becomes dirty, about once every 1 to 4 weeks.

After 6 to 12 months’ usage, the micro holes of sponge is gradually clogged by the tiny debris. That’s when the sponge filter starts to lose its efficiency. So it is also recommended to replace the sponge once 6 to 12 months or when the sponge gets worn out.

And carbon, ammonia and phosphate pads will become chemically exhausted over time, so they are suggested to be replaced at least once per month.

  • Compatible to SUNSUN Canister filter HW-304B/404B/704B/3000 Polar Aurora 525gph, aquatopCF-500.
  • 4x sponge bio filter pads (1xCoarse, 2xmedium, 1xfine): trap most visible debris particles without restricting water flow. (Reusable after rinsed)
  • 2 pcs activated carbon + 1 pc ammonia + 1 pc phosphate Remover filter pad: remove water discoloration, odor, and dissolved fish waste.
  • 8 pcs of white floss pads: Filter out fine particles providing crystal clear water.
  • Provides mechanical, biological and chemical filtration. Includes: 4x sponge bio filter pads (1xCoarse, 2xmedium, 1xfine), 4x bonus filter pads (2x activated carbon, 1x Ammonia, 1x Phosphate Remover), 8x floss filter pads

User questions & answers

Question: How long does the carbon, ammonia, phosphate filter last? Before it needs replaced
Answer: Hello, they should be replaced about once a month, thank you.
Question: Will this filter kit work on my sunsun hw-402b canister
Answer: I think the filters are a little different size. If there to big you could trim them to size with scissors.
Question: In what order do you put these filters into your sunsun canister? I’ll be putting these in a 303b model, which only has 3 sections. Thanks
Answer: The Order of your filter media is of GREAT IMPORTANCE! First you need to know the direction of water flow through your filter. Some filters are top to bottom, some are bottom to top and some are outside to inside etc. You always want the dirty water to hit your coarse foam first, then medium foam, then fine foam and finally your polishing pads. Then, after the foam pads you put your biological media stones. You want to get as much of the debris out of the water before it hits your biological media so that it does not clog up the pores of the stones. The bacteria needs to be able to get into the fine pores of the stones and the more water flow you have across the stones the more effective the biological bacteria will filter the water and neutralize the nitrates and nitrites. It makes a significant difference which order you put the media! If you put your media in the wrong order you are preventing your nitrogen cycle from functioning at its most effective rate and creating a toxic situation for your fish! Remember Coarse foam to fine foam, then polishing pads, then bio-stones. Rinse your pads at least once a month and replace the polishing pads.
Question: Do you used these pads in addition to carbon media pellets or do you use these pads without the pellets
Answer: you do not have to use any extra carbon pellets but i add a small bag to the same section as the filter just because i dont have to change these filters as fast so the extra carbon helps with clarity of water

Sunsun Original Replacement Accessories Canister Filter

SUN

Based on 396 reviews Check latest price

Product description

Kit includes: Whole inlet pipe, whole output pipe, 4 tube clamps, 4 suction cups, quick shut off valve and 2 green hoses.

  • Kit includes: Whole inlet pipe, whole output pipe, 4 tube clamps, 4 suction cups
  • Quick shut off valve and 2 green hoses

User questions & answers

Question: We're con i bay the main body sunsun 505A canister filter
Answer: No its very stiff and cheap in my opinion. Dont wast your money.
Question: Will this quick connect fit my HW-302 canister filter
Answer: No and it doesn't work that great. I have to punch holes in it every few days to keep air flowing
Question: Is there any way i can get the inlet pipe in the picture, with the surface skimmer instead of the straight pipe i received
Answer: They are about average. Not super-fine, but a nice steady bubble wall.
Question: Will this fit the sunsun 704b? if so which kit do i get. seller said it wont fit in one post then said it would in another
Answer: Hello, Thanks for your question. Yes, this bubble wall is made from the same sand material that air stones are made from.

SUNSUN HW-303B Canister Filter with 9-watt UV Sterilizer

Monster Pets

Based on 747 reviews Check latest price

Product description

Canister Filters provide superior filtration ideal for larger or heavily-stocked aquariums. Suitable for use with freshwater or saltwater aquariums, canister filters maximize filtering capacity by taking advantage of their large filter body. Canister filters are used by fish enthusiasts who need superior mechanical, biological and chemical filtration in large aquariums that house their fish. Canister style external filter offers a greater quantity of filter materials to be used along with a greater degree of flexibility. Water enters the canister filled with the chosen filter material through an intake pipe at the bottom of the canister, passes through the material, and is fed back to the aquarium through the return pipe. Water is forced to circulate through the filter by a pump inside the canister. External canister provide a high volume of filter material without reducing the internal space in the aquarium, and that they can be disconnected from the tank for cleaning/maintenance and replaced without disturbing the aquarium interior or occupants.

Specification:

  • Good for up to 75 gallon fish tanks
  • Max Flow Rate: 525GPH (1000L/h)
  • Includes all hoses and everything necessary to get started

Package Content:

  • 1x Barrel Head
  • 1x Main Canister Body
  • 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
  • 3x Input Bars
  • 1x Input Cover
  • 3x white-fine Pad Cottons pads

  • Canister filters for aquariums use high water pressure, from a properly powered pump, to force water through the dense filter media. A pump can draw water from an under-gravel filter, and run it into a canister for double filtration
  • 3 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
  • Built in 9 Watt UV sterilizer to help kill algae spores and bacteria, promoting crystal clear water
  • Convenient self-priming pump that eliminates the need for manual siphoning; Single valve disconnect & priming pump ease routine maintenance
  • Provides quiet, efficient filtration for fresh and saltwater aquariums is great for living rooms, offices or bedrooms

User questions & answers

Question: How long of warranty is there? Mine leaks thru top
Answer: I have no idea. However I have seen on forums that if you contact the seller or manufacturer that they are very responsive. For me I got annoyed while standing in five gallons of water and bought a Fluval. Good luck.
Question: Dose filter come with Filter pads
Answer: It comes with 3 thin pads you will definitely need to buy ...more filter pads or cushion/padding to put inside cause the stuff that comes with it is useless
Question: I have 3 parts remaining, a small elbow and a 2" tube and a 4-5" tube w/ a nut type end on it. Where do these go? The instructions are worthless
Answer: I just used the end of the tube with the end filter. Didn't use the elbow...works straight tube and connecting tube with flixter at the end
Question: How well does it do with a 100 gallon tank
Answer: It worked on my 125 aquarium. I also had a corner sponge filter as well. If your worried go to the next level higher but at 375 gallons you have more than enough. This is also the same unit as the aquatop uv400 but this is the chinese branded.

AQUANEAT 16pcs Replacement Canister Filter Pads Compatible to SUNSUN HW-303B/703B Aquarium Filter Media Generic Sponges Floss

AQUANEAT

Based on 340 reviews Check latest price

Product description

Features:

Fit for SUNSUN HW-303B/703B, Polar Aurora 370gph, Aquatop CF400 Canister filters.

4x sponge bio filter pads (1xCoarse, 2xMedium, 1xFine): trap most visible debris particles without restricting water flow. (Reusable after rinsed)

12 pcs of white floss pads: Filter out fine particles providing crystal clear water.

Provides both mechanical and biological filtration

INCLUDES:

1xcoarse (Blue)

2x medium (Green)

1xfine (Black)

12xfloss filter pads (White)

Tips for Usage and Maintenance:

Maintenance of Sponges:

The sponge will need to be rinsed every time it becomes dirty, about once every 1 to 4 weeks.

After 6 to 12 months’ usage, the micro holes of sponge is gradually clogged by the tiny debris. So it is also recommended to replace the sponge once 6 to 12 months or when the sponge gets worn out.

  • Fit for SUNSUN HW-303B/703B, Polar Aurora 370gph, Aquatop CF400 Canister filters.
  • 4pcs of sponge bio filter pads (1xCoarse, 2xMedium, 1xFine): trap most visible debris particles without restricting water flow. (Reusable after rinsed)
  • 12 pcs of white floss pads: Filter out fine particles providing crystal clear water.
  • Provides both mechanical and biological filtration
  • Includes: 1xcoarse (Blue), 2x medium (Green), 1xfine (Black) + 12 floss filter pads (White)

User questions & answers

Question: Will these fit a aquatop cv500-uv canister filter
Answer: It would probably be best to buy a new entire filter than to buy a single part. If not, eBay would be your best bet.
Question: will theses fit sunsun hw
Answer: all will work but one part and that is the black valve body.This is the in and out tubes.
Question: Can some on tell me if the course filter goes on the top or bottem of the sunsun canister filter
Answer: the surface skimmer part is very old model the new model have not this part
Question: Will this fit the Polar Aurora 525gph
Answer: it will not fit 704B, 704B are different I confirmed

AQUANEAT 9 pcs Replacement Aquarium Canister Filter Pads Compatible to SUNSUN HW-304B/404B/704B/3000 CF500 Filter Pads Bio Sponges

AQUANEAT

Based on 178 reviews Check latest price

Product description

Features:

Fit for SUNSUN Canister filters HW-304B/404B/704B, HW-3000, Polar Aurora 525gph, Aquatop CF-500.

Bio sponges come in 3 densities: coarse medium and fine (reusable after rinsed)

Trap most visible debris particles without restricting water flow.

Provides both mechanical and biological filtration

INCLUDES:

3xcoarse (Blue)

3x medium (Green)

3xfine (Black)

Tips for Usage and Maintenance:

Maintenance of Sponges:

the sponge will need to be rinsed every time it becomes dirty, about once every 1 to 4 weeks.

After 6 to 12 months’ usage, the micro holes of sponge is gradually clogged by the tiny debris. So it is also recommended to replace the sponge once 6 to 12 months or when the sponge gets worn out.

  • Compatible to SUNSUN Canister filters HW-304B/404B/704B, HW-3000, Polar Aurora 525gph, Aquatop CF-500.
  • Bio sponges come in 3 densities: coarse medium and fine (reusable after rinsed)
  • Traps most visible debris particles without restricting water flow.
  • Provides both mechanical and biological filtration.
  • Includes: 9 pcs filter pads (3xcoarse (Blue), 3x medium (Green), 3xfine (Black))

User questions & answers

Question: Will fit 703b sun sun canister filter
Answer: I believe so

SunSun HW-404B 525 GPH 5-Stage External Canister Filter with 9W UV Sterilizer, White

SunSun

Based on 290 reviews Check latest price

Product description

The SUN HW-404B external 5 stage canister filter is ideal for tanks up to 150 gallon. It handles up to 525 gallons per hour. The SUN HW-404B includes filter pads, hoses and all the parts you need to get started. The four flexible media trays allow you to add other filtration media such as sunsun' S activated carbons, ceramic rings or bio-balls (each sold separately) to achieve excellent mechanical, chemical, and biological filtration. A built in 9 watt UV sterilizer helps control algae spores/bacteria and promotes clear water. The HW-404B canister filter also has a convenient self-priming pump that eliminates the need for manual siphoning.

  • Good for up to 150 gallon fish tanks
  • Dimension: 11" L x 11" W x 19" H
  • Flow rate: 525 GPH (2000L/hr)
  • Pump power: 55W
  • Built in 9 watt UV sterilizer for controlling algae spores/bacteria and promoting clear water
  • Refer user manual provided in product details section for information regarding product assembly, usage and troubleshooting.

User questions & answers

Question: why is it called an outside filter
Answer: Because the canister filter sets outside the fish tank. I bought 4 of them over the years. I now use Aquaclear 110’s. They are much better.
Question: What's the difference between a 303B canister filter versus a 304B canister filter
Answer: The gallons I believe
Question: i bought a 404b sunsun canisrer. i reseve it today. got set up. and all. but my uv light on it. doesnt work? what can i do? or who should i contact a
Answer: Don't quote me on this but I'm sure the UV light works. The switch/light on for UV light is faint that is barely noticeable. The light doesn't turn when it's open or unattached from the bottom of the canister.
Question: What is the difference between this one 404b and the 304b ?? looks the same except size a bit bigger for 404b
Answer: Yes thats the only difference, but its not a bit bigger, its a lot more bigger. For the price i preffer 404b, o have in use 5 304b and 3 404b, and the difference is big!!!

SunSun Hw303B 370GPH Pro Canister Filter Kit with 9-watt UV Sterilizer

SunSun

Based on 712 reviews Check latest price

Product description

The Sun HW-303B external 4 stage canister filter is ideal for tanks up to 100 gallon. It handles up to 370 gallons per hour. The Sun HW-303B includes filter pads, hoses and all the parts you need to get started. The three flexible media trays allow you to add other filtration media such as Sun Sun's activated carbons, ceramic rings or bio-balls to achieve excellent mechanical, chemical and biological filtration. A built in 9 Watt UV sterilizer helps control algae spores/bacteria and promotes clear water. The HW-303B canister filter also has a convenient self-priming pump that eliminates the need for manual siphoning.

  • HW-303B Pro Filtration Kit, Good for up to 100 gallon aquariums
  • Flow rate: 370 GPH (1400L/Hr)
  • Dimension: 10.5" L X 10.5" W X 16" H
  • Pro Kit Includes Canister Filter w/9 Watt UV, 3 White Filter Pads, 1 Blue Coarse Pad, 3 Media Baskets
  • Includes 1lb of Premium Filter Carbon, 1lb of Ceramic Rings and 1 Set of Bio Balls

User questions & answers

Question: Does it have a seprate on/off switch for UV ? like what sunsun hw-402b has
Answer: Yes
Question: What is the exact size (width & length)? can someone please measure the widest part? It states 10.5" but ebay and other sites states as
Answer: The width is 10 1/2 inches and the high is 14 1/2 inches tall
Question: Set up as instructed using several videos, when I prime it the water flows but it wont do so on its own. Help
Answer: Make sure have right lines in right location. Dont fill up with water and pump till u here it filling up. Once its full u can plug in and it will flow. If not give it few more pumps get rest of air out
Question: is it quiet
Answer: It is pretty quiet. I have a Fluval ,Ehiem ,and Magnum filters, and if there is any noise from any, it is from the movement of water from the outlet.

Product features

SunSun HW-303B Pro Canister Filter

Includes: Filter Media, 3 White Filter Pads, 1 Blue Coarse Pad.

Excellent for Freshwater and Saltwater Aquariums

The SunSun HW-303B 4-Stage External Canister Filter with a built-in UV sterilizer is ideal for tanks up to 100 gallons. It is capable of handling up to 370 gallons per hour with flexible media trays that allow you to add your media such as SunSun's activated carbons, ceramic rings, or bio-balls to achieve excellent mechanical, chemical, and biological filtration. The HW-303B has a built in 9-Watt UV sterilizer to help kill algae spores and bacteria. The UV sterilizer also promotes clear crystal water. The HW-303B canister filter also has a convenient self-priming pump that eliminates the need for manual siphoning.

Filter Media Included

Filter media improves water clarity, color, and odor. Porous ceramic rings provide an ideal growing site for beneficial bacteria. Bio-balls promote gas exchange and increase dissolved oxygen levels. Filter media will not affect water characteristics. Filter media is also great for SunSun HW Canisters or any other filters.

SunSun Hw302 265GPH Pro Canister Filter Kit

SunSun

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Product description

The SunSun HW-302 3 stage external canister filter is ideal for tanks up to 75 gallon. It handles up to 264 gallons per hour. The SunSun HW-302 includes filter pads, hoses and all the parts you need to get started. The three 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. The HW-302 canister filter also has a convenient self-priming pump that eliminates the need for manual siphoning.

  • HW-302 Pro Filtration Kit, Good for up to 75 gallon aquariums
  • Flow rate: 265 GPH (1000L/Hr)
  • Dimension: 9" L X 9" W X 15.5" H
  • Pro Kit Includes Canister Filter, 3 White Filter Pads and 3 Media Baskets
  • Includes 1lb of Premium Filter Carbon, 1lb of Ceramic Rings and 1 Set of Bio Balls

User questions & answers

Question: Will this be good in a 40 gallon breeder tank ? With sand ? Or should I just stick with 2 power filters
Answer: I have two of these filters and I use one in a 55 gallon tank with pea gravel and it works perfectly. The other I use in a 100 gallon indoor pond and the water is crystal clear.
Question: Can you use this filter for lower water level tanks such as turtle tanks
Answer: I use this in my 55 gal turtle tank which has about 7" of water in it. I had to tape up the intake pipe joints to reduce air leaks and I had to manually prime the intake line to get it to start but it does work fine once the siphon gets started. I'm going to drill the tank below the water level and convert it to gravity fed because it's a real pain to get started due to the vertical distance the water has to travel to leave the tank.
Question: Can I use this in a half full tank? I have a 20gallon long breeder tank a little over half full, about 11 or 12 gallons
Answer: There is plenty of power in the pump but you will have to make some modifications to the fittings in order to extend the height in the tank. I set mine up for turtles and was able to get the water level 5 inches below the rim with the firings provided.
Question: Can I use this on a 45g reef tank
Answer: Yes it will work. But canister filters will harbor nitrates if not cleaned every week. A good protein skimmer and good water flow is much better for salt water. I would recommend a hang on back filter just to clear the debris and clarify the water as needed, it doesn't have to run constantly. Canister filters are not needed for reef aquariums. I bought this canister for my freshwater fish tank and it's decent for that.

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