Easy Flow Sponge Filter

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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.

Aquarium Co-Op Filter Aquarium Co-Op Coarse Sponge Filter with Easy Flow Kit

Increase Circulation in Your Aquarium

No Air Stone Needed

Aquarium Co-Op Filter Aquarium Co-Op Coarse Sponge Filter with Easy Flow Kit
Aquarium Co-Op Filter Aquarium Co-Op Coarse Sponge Filter with Easy Flow Kit

Blends In With Plants

Extra Heavy Base

Aquarium Co-Op Filter Aquarium Co-Op Coarse Sponge Filter with Easy Flow Kit
Aquarium Co-Op Filter Aquarium Co-Op Coarse Sponge Filter with Easy Flow Kit

Coarse Sponge

Cleaning Is Easy

Customer Reviews

Based on 2858 reviews
93%
(2666)
4%
(105)
1%
(41)
1%
(15)
1%
(31)
M
Micheal (Trenton, UT, US)
The best sponge filter around.

I have now switched all of my tanks to co op filters. They work well and now with the addition of the easy flow kit do not require an air stone. The flow tube is indeed a big upgrade from a standard sponge filter. I like having filters with large pores that don't clog as fast. Sometimes I wish there was a Co Op small pore sponge add on option though to help polish water.

T
Travis B. (Tacoma, WA, US)
Amazing

So much better than I expected. Much better flow and filtration than other sponge filters. Wonderful not having the bubbles pop at surface, instead they flow out more evenly across the tank, no more water being splashed on tank glass tops turning them that lovely algae green lol. So glad I bought these.

c
cie l. (Gainesville, GA, US)
Med filter for my 29gallon tank

Arrived fast and easy to put together. Definitely added better circulation to the tank. However i need to get another one to stack on top to filter everything else floating between the middle to top of my tank.

A
Adrian H. (Cartersville, GA, US)
Filter

Love the new design and this filter works great.

L
Lee W. (Beaverton, OR, US)
Great sponge filter

Probably the best sponge filter out there. Wish they had different pore densities