Editor's Choice - Our Favorite SunSun Aquarium Filter Accessories

1. Sunsun HW302, HW303, HW304 3 Stage Aquarium Canister Filters

User Ratings: 63 13

SunSun HW-304B First Impressions

"They do the job well!"

It made no sense why one was ten and the other was twenty. It was a struggle to keep the water clear before i got the goldfish. It eventually begins to decompose into ammonia which is harmful to your fish. Right now I am letting the filter work it's magic. The Tetra Medium bio-bag slip easily on an original Top Fin plastic holder. Also work great as filler for canisters and other filters. It eventually begins to decompose into ammonia which is harmful to your fish.

  • Sunsun HW302, HW303, HW304 3 Stage Aquarium Canister Filters
  • Good for up to 150 gallon fish tanks
  • Dimension: 11" L x 11" W x 17" H
  • Flow rate: 525 GPH (2000L/hr)
  • 3 Media Trays capable of handling your choice of filtration media
  • Manufacture: SUNSUN
  • Editor's Impressions Of The SunSun HW-304B
  • Quality [star rating='3.5']
  • Value For Money [star rating='4.2']
  • Affordability [star rating='4.1']

SunSun HW-304B Final Thoughts

"I would buy it again."

I have a Top Fin 10 power filter and these cartridges fit perfectly. It was nicely packaged and is a high quality filter material. Also work great as filler for canisters and other filters. Just be super careful with the tubes! Don't shut it off for more than a few minutes at a time. I use two layers of floss before the water goes to and through my chemical media. The injection molding for the plastics leave a lot to be desired.

Overall Score
4.1

[star rating="4.1"]
(760 Points)

2. Leyouyou520 3 pcs Pre-Filter Foam Sponge Filter for Aquarium Fish Tank

User Ratings: 61 6

leyouyou520 CJJ-NKOIU012 First Impressions

"Works well."

The main part is cleaning, that I need to find out. I can now afford to change all my filters at a fraction of the cost. The more you overpopulate your tank, the more frequently you'll have to do this. The filters fit fine and I was happy to see that some carbon packs were included. We use this product to the extreme. It made no sense why one was ten and the other was twenty. Nitrates in small doses are not as harmful to the fish as Ammonia.

  • Leyouyou520 3 pcs Pre-Filter Foam Sponge Filter for Aquarium Fish Tank
  • Premium Quality Foam Sponge Connects to filter intake Traps fine debris Prevents small or baby inhabitants from being drawn into filter Bulk packaged to protect the environment and save you money
  • Size: 8.4*5cm/3.1*1.5inch
  • Inside Diameter: 2.1cm/0.8inch
  • Single Hole
  • Package included: 3* Pre-filter Spong
  • Manufacture: Leyouyou520
  • Editor's Impressions Of The leyouyou520 CJJ-NKOIU012
  • Quality [star rating='4.8']
  • Value For Money [star rating='3.7']
  • Affordability [star rating='4.6']

leyouyou520 CJJ-NKOIU012 Final Thoughts

"It's amazing."

Does the job and price was less or at least same as big retailers. I just changed it today and the water is crystal clear-- no problems. Because they are the smart thing to do when you keep aquariums. I have been buying these bags for years. I use this in my filter for aquarium 55 gal. Make sure to select the Medium size from Tetra. You will also need to replace their rechargeable batteries about every 2 years or so.

Overall Score
4.2

[star rating="4.2"]
(540 Points)

3. Powkoo Sponge Filter Aquarium Filter Sponge Fish Tank Sponge Filter

User Ratings: 72 4

Powkoo 4022162 First Impressions

"ALL I can say is wow."

I purchase the 8 pack size Large and fits great on my TopFin 40 Gallon Filter. Any floating debri will get caught in a sponge intake on the reverse power head kit. I had to take a blade and run it through all the slats because the factory doesnt q. My tank is 12x36 so I utilized 3 of the panels. Small amounts of these bubbles can also help oxygenate the water over time. It includes 12 mesh filter bags& 12 packets of charcoal. Because they are the smart thing to do when you keep aquariums.

  • Powkoo Sponge Filter Aquarium Filter Sponge Fish Tank Sponge Filter
  • High density porous sponge, traps floating debris and fine particles, help to keep your fish tank crystal clear and clean, the sponges are fine 60ppi very porous.
  • Breeding of bacteria:superfine biochemical cotton has the effect of culture of bacteria, increase oxygen, so that the fish tank water is more clear, closer to the natural water quality
  • Easy to set up: simply install the replacement sponges into the arms holding the sponges, washable and reusable
  • Easy to clean: simply rinse and squeeze the sponge in used aquarium water, NOTES: recommend to replace the sponge every 5 to 6 months maximum
  • It is important to replace the sponge filters regularly for optimal filter performance. what you get: 4 pcs x Powkoo replacement sponges, 1 x Powkoo retail package box
  • Manufacture: Powkoo
  • Editor's Impressions Of The Powkoo 4022162
  • Quality [star rating='4.7']
  • Value For Money [star rating='5']
  • Affordability [star rating='3.8']

Powkoo 4022162 Final Thoughts

"48 the decision is easy."

For obvious reasons, don't put them directly above or below a tank. Just be careful punching out the plastic. A great addition to the filtration system. Have been using this product for few month for my planted tank. Most plants won't like the highly oxygenated gravel and will die. The foam is not coarse as illustrated; it's finer and denser. The more you overpopulate your tank, the more frequently you'll have to do this.

Overall Score
4.5

[star rating="4.5"]
(97 Points)

4. Fluval Flex 15g Black Foam Filter Insert (A1375)

User Ratings: 83 4

Fluval A1375 First Impressions

"I bought the 6ft roll."

If you have a nano tank with filter these would be perfect for that setup. I was having a problem with tiny fish getting sucked into the inlets. Small amounts of these bubbles can also help oxygenate the water over time. Fun to modify your filter and clean tank as well. I end up cutting a small 2x3 inch square for each of my media baskets. This is a lot of filter pad for your money. You can run everything on battery backup sockets.

  • Fluval Flex 15g Black Foam Filter Insert (A1375)
  • Flex 15g exclusive
  • Simple replacement process
  • Slick, Black color
  • The plastic "C" clip does not come with the replacement foam
  • Manufacture: Rolf C. Hagen (USA) Corp.
  • Product Dimensions: 3 x 5.2 x 10 inches; 1.28 Ounces
  • Editor's Impressions Of The Fluval A1375
  • Quality [star rating='4.8']
  • Value For Money [star rating='5']
  • Affordability [star rating='5']

Fluval A1375 Final Thoughts

"Great product."

The measurements are about 9 cm long x 4 cm wide and the hole is about 2 cm. But if you don't weekly vacuum it up, it will eventually clog the filter. Have been using this product for few month for my planted tank. Any floating debri will get caught in a sponge intake on the reverse power head kit. Don't restrict air-flow around them as they do get quite warm. Works well for my low flow Aquaclear 20. I have been using an Aquaclear 50 on a 20g long planted tank.

Overall Score
4.7

[star rating="4.7"]
(323 Points)

5. AQUANEAT Double Bio Sponge Filter, for Fry, Betta, Shrimp, Nano Aquarium Fish Tank with Airline Tubi...

User Ratings: 78 3

AQUANEAT First Impressions

"This will last me awhile."

The material is a soft and not abrasive at all. Did all of mine The same, never ripped a one and they all fit like a glove. This is a lot of filter pad for your money. I purchased these for an aquarium at school. I will always buy these here on Amazon for the price savings. If you don't know much about this just google it. Even its quite costly, but it last long.

  • AQUANEAT Double Bio Sponge Filter, for Fry, Betta, Shrimp, Nano Aquarium Fish Tank with Airline Tubing, Air Pump Valves, Suction Cups
  • Biochemical Filtration:Sponge filter provide both mechanical and biological filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility
  • Easy to Set up & Clean: Simply install an airline into the unit and turn on the air pump, simply rinse and squeeze sponge in tank water
  • Recommend Tank Size: Up to 10 gallon, excellent for small size fish like dwarf cichlid, guppy, killifish etc ; or for hatcheries, maternity tanks, and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter
  • Dimension: 4”L x 1.8”W x 6.25”H
  • Includes: 1 sponge filter, 1 set of accessories: 4 suction cups, 4ft airline tubing,1 control valve, 1 tee, 1 non-return check valve
  • Manufacture: AQUANEAT
  • Editor's Impressions Of The AQUANEAT
  • Quality [star rating='3.8']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.1']

AQUANEAT Final Thoughts

"I'm a client for life."

I use this in my filter for aquarium 55 gal. Once you do have everything it's a good running system. Keep your stocking of creatures low. I have a Top Fin 10 power filter and these cartridges fit perfectly. Also work great as filler for canisters and other filters. The filters fit fine and I was happy to see that some carbon packs were included. And provide a few low current areas in the tank for fish who are stressed to rest.

Overall Score
4.6

[star rating="4.6"]
(239 Points)

6. AquaClear Extension Tube for 20, 30, 50 Power Filters

User Ratings: 77 3

AquaClear A625 First Impressions

"This is a great product."

I will update more pictures later, once the water isnt cloudy. I replace my filter material in my IM Nuvo 20 reef tank every week. Stop buying those expensive filters, buy this and make your own. The UG is certainly no exception to that. This improves flow and prolongs time between cleaning. These work great as pre filter sponge on my quiet flow 10. I was having a problem with tiny fish getting sucked into the inlets.

  • AquaClear Extension Tube for 20, 30, 50 Power Filters
  • Product Type: PET SUPPLIES
  • Package length: 0.2 cm
  • Package width: 7.0 cm
  • Package height: 10.0 cm
  • Manufacture: Rolf C. Hagen (USA) Corp.
  • Product Dimensions: 0.9 x 3.1 x 7.5 inches; 0.51 Ounces
  • Editor's Impressions Of The AquaClear A625
  • Quality [star rating='4.3']
  • Value For Money [star rating='5']
  • Affordability [star rating='4.3']

AquaClear A625 Final Thoughts

"And it WAS a problem."

Just be careful punching out the plastic. I also suppose my measuring tape may be off, but I would not think so. Lets start with the amount of filter material you get. Especially if you have a take with shrimp or baby fish. The measurements are about 9 cm long x 4 cm wide and the hole is about 2 cm. I use this in my filter for aquarium 55 gal. But a small simple rubber band fixed the issue quickly.

Overall Score
4.6

[star rating="4.6"]
(487 Points)

7. Marineland Bio-Filter Balls, Supports Biological aquarium Filtration, Fits All C-Series Canister Fil...

User Ratings: 81 1

MarineLand PA11486 First Impressions

"Quiet and reliable."

The UG is certainly no exception to that. I had to take a blade and run it through all the slats because the factory doesnt q. I was having a problem with tiny fish getting sucked into the inlets. You will also need to replace their rechargeable batteries about every 2 years or so. I will keep using these and recommend them to anyone. The foam is not coarse as illustrated; it's finer and denser. We use this product to the extreme.

  • Marineland Bio-Filter Balls, Supports Biological aquarium Filtration, Fits All C-Series Canister Filters
  • BIO-FILTER BALLS: Provide a larger, multi-faceted area for the growth of beneficial Bio-Spira bacteria.
  • FOR BIOLOGICAL FILTRATION: An important component of maintaining a clean and healthy aquatic environment.
  • QUANTITY: Contains 90 Marineland Bio-Filter Balls.
  • MARINELAND FILTRATION PRODUCTS: Count on Marineland brand for the most reliable, technically advanced aquariums and accessories on the market.
  • Provide larger, multi-faceted surface area for support of biological filtration
  • In the event of excessive buildup, you may gently rinse with water from an established aquarium
  • Do not clean with soaps or abrasives and never rinse with unconditioned tap water
  • Manufacture: Marineland
  • Product Dimensions: 6.5 x 1.77 x 6.5 inches; 6.4 Ounces
  • Editor's Impressions Of The MarineLand PA11486
  • Quality [star rating='4.8']
  • Value For Money [star rating='4.6']
  • Affordability [star rating='4.8']

MarineLand PA11486 Final Thoughts

"It's amazing."

I purchased these for an aquarium at school. If you have a nano tank with filter these would be perfect for that setup. I can now afford to change all my filters at a fraction of the cost. The measurements are about 9 cm long x 4 cm wide and the hole is about 2 cm. Nitrates in small doses are not as harmful to the fish as Ammonia. You can cap off the ones you don't want to use. It comes with the filter bag, bag frame, and charcoal media all separate.

Overall Score
4.7

[star rating="4.7"]
(1592 Points)

8. Magic&shell Mesh Filter Bags 20 PCS Aquarium Polyester Media Mesh Filter Bags with Zipper for Fish T...

User Ratings: 70

Magic&shell First Impressions

"It's worth that price."

I had to rinse the sponges after about 2. I have been buying these bags for years. Work perfect on my shrimp tank to keep them out of the filter. The filters fit fine and I was happy to see that some carbon packs were included. It was exactly what I needed and fit beautifully. Also work great as filler for canisters and other filters. Just be careful punching out the plastic.

  • Magic&shell Mesh Filter Bags 20 PCS Aquarium Polyester Media Mesh Filter Bags with Zipper for Fish Tank Activated Carbon Charcoal Filter Accessories 18x23mm
  • Made of high quality Polyester and Plastic,durable, washable, and can be reused.
  • Each filter bag with a zipper, the zipper is plastic, so it won't rust and harm fish health.
  • The envelope is tightly closed to prevent potential damage to the motor of your pump or power filter caused by loose media.
  • Suitable for filtering fine, carbon and small particles, suitable for any occasions such as aquariums, swimming pools, ponds, etc.
  • Size: approx. 18x23cm/ 7.1x9.1 Inches.Package Includes:10 PCS Black Filter Bags,10 PCS White Filter Bags.
  • Manufacture: Magic&shell
  • Editor's Impressions Of The Magic&shell
  • Quality [star rating='5']
  • Value For Money [star rating='5']
  • Affordability [star rating='3.8']

Magic&shell Final Thoughts

"Good quality."

Keep your stocking of creatures low. Also work great as filler for canisters and other filters. But if you don't weekly vacuum it up, it will eventually clog the filter. I had a 90 gallon aquarium that I did not use an undergravel filter in. These have prevented my original problem. It works okay for now but I hope it does not mess up my filter in the long run. I was having a problem with tiny fish getting sucked into the inlets.

Overall Score
4.6

[star rating="4.6"]
(16 Points)

9. Sunsun HW302, HW303, HW304 3 Stage Aquarium Canister Filters

User Ratings: 63 13

SunSun HW-304B First Impressions

"They do the job well!"

It made no sense why one was ten and the other was twenty. It was a struggle to keep the water clear before i got the goldfish. It eventually begins to decompose into ammonia which is harmful to your fish. Right now I am letting the filter work it's magic. The Tetra Medium bio-bag slip easily on an original Top Fin plastic holder. Also work great as filler for canisters and other filters. It eventually begins to decompose into ammonia which is harmful to your fish.

  • Sunsun HW302, HW303, HW304 3 Stage Aquarium Canister Filters
  • Good for up to 150 gallon fish tanks
  • Dimension: 11" L x 11" W x 17" H
  • Flow rate: 525 GPH (2000L/hr)
  • 3 Media Trays capable of handling your choice of filtration media
  • Manufacture: SUNSUN
  • Editor's Impressions Of The SunSun HW-304B
  • Quality [star rating='3.5']
  • Value For Money [star rating='4.2']
  • Affordability [star rating='4.1']

SunSun HW-304B Final Thoughts

"I would buy it again."

I have a Top Fin 10 power filter and these cartridges fit perfectly. It was nicely packaged and is a high quality filter material. Also work great as filler for canisters and other filters. Just be super careful with the tubes! Don't shut it off for more than a few minutes at a time. I use two layers of floss before the water goes to and through my chemical media. The injection molding for the plastics leave a lot to be desired.

Overall Score
4.1

[star rating="4.1"]
(760 Points)

10. Finest-Filters 1 Metre Roll of 35-45mm Filter Wool/Floss for Aquarium and Pond Filters

User Ratings: 75 3

Finest-Filters First Impressions

"Good quality."

Plenty strong to support the rocks and gravel in my tank without sagging. Just be super careful with the tubes! It made no sense why one was ten and the other was twenty. You can run everything on battery backup sockets. The first piece does get a bit dirty and usually only lasts a week. I change my filters once a month, so the 12 pack lasts me a year! I replace my filter material in my IM Nuvo 20 reef tank every week.

  • Finest-Filters 1 Metre Roll of 35-45mm Filter Wool/Floss for Aquarium and Pond Filters
  • This filter wool is ideal for mechanical filtration (wate particle removal) in both aquarium and pond filters alike
  • Finest-Filters rolls of filter wool are 27inches in width (69cm)
  • Measurements for this particular roll: 1 metre x 27" by 35-45mm thickness
  • Suitable for all types of filter - in both fresh and saltwater aquariums
  • Very effective at removing fine particles in the water - giving the water a final 'polish'.
  • Manufacture: Finest-Filters
  • Editor's Impressions Of The Finest-Filters
  • Quality [star rating='5']
  • Value For Money [star rating='4.6']
  • Affordability [star rating='5']

Finest-Filters Final Thoughts

"They work very well."

Fill with the supplied carbon and voila. Don't believe people who tell you they are dangerous for your tank. Fish that are constantly swimming hard will tire and die from stress. In 20 gallon and under sized tanks these start becoming feasible primary filters. It was exactly what I needed and fit beautifully. They are easy to clean but are very small. If you don't know much about this just google it.

Overall Score
4.6

[star rating="4.6"]
(209 Points)

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