Aquarium Co-Op Coarse Sponge Filter with Easy Flow Kit

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  • Air collar makes smaller bubbles for improved performance
  • Easy Flow accessory increases water circulation
  • Coarse, anti-clogging sponge
  • Weighted base sinks instantly and helps prevent floating

Sponge filters offer reliability and hassle-free operation. With no moving parts, all you need is an air pump with some airline tubing, and you've got a filter that is fully contained within your aquarium.  Sponge filters are completely reusable, don't need any replacement cartridges, and last for several years. Plus, they are gentle enough for betta fish, baby fry, shrimp, and other slow-moving species. Trusted by fish farms and wholesalers, they are an excellent choice for aquarium filtration that you can set and forget.

To optimize the sponge filter’s performance, we’ve included an air collar that replaces the need for an air stone and minimizes bubbles coming out of the side of the sponge. The air collar produces smaller bubbles that lessen noise and create more continuous current. If you need greater water circulation, use the included Easy Flow accessory that curves the uplift tube so that water flows out of the sponge filter horizontally across the water surface and around the aquarium.

The Aquarium Co-Op sponge filter is designed using coarse foam so that it can go many weeks between cleanings. The weighted base will immediately sink to the bottom of your aquarium, so no more floating up after a water change or initial installation. Also, the green plastic helps hide algae and blend in with your live aquarium plants.

Customer Reviews

Based on 2772 reviews
93%
(2583)
4%
(104)
1%
(41)
1%
(14)
1%
(30)
A
A. (Kennewick, WA, US)
Great Filter!

This sponge filter is perfect for the 10 gallon tank I'm setting up for a betta. I've just purchased one to add to my 5.5 gallon tank too.

K
Kristy W. (Martinsburg, WV, US)
Very Easy Flow

Love the ease of setup and the great amount of flow this creates. This is my first Co-Op sponge purchase, but now I want to change my whole fishroom over!!

E
E. B. (Pembroke Pines, FL, US)
Great addition to my tank

The easy flow kit/tubing makes the sponge filter much better. Moving the flow of water in a direction that helps with filtration has improved my tank cleaning process and the cleanliness of my tanks

J
JF (Saint Paul, MN, US)
Easy Flow Sponge Filter

I bought two medium size Easy Flow Sponge Filters for my 40-gallon breeder. They're doing a great job. I like that I can have a good current going across the top of the water column; it looks nice and cuts down on the duck weed.

T
Tera H. (Greeneville, TN, US)
Easy flow

Works great so far