Filters · Sponge
Aquarium Co-Op Easy Flow Sponge Filter, Small
Maker guidance starts at 10 US gal; there is no published maximum.
Reusable air-driven fine sponge with a weighted base, uplift tube, and air collar.
Consider: It has no built-in motor. Choose and budget an air pump and airline together with the filter; the pump and water depth affect delivered flow.
US version. Check what’s in the box before you buy.
Tank size Aquarium Co-Op rates it for
Range not published
Choose your tank to see where it falls.
Check it against your tank →Specifications that affect fit
- Manufacturer capacity
- Not published
- Power
- None of its own: it runs on an air pump
- Dimensions
- Not published
Before choosing this model
- Add an air pump, airline tubing, and check valve.
- Check uplift-tube height in shallow tanks.
What Aquarium Co-Op doesn’t publish
- Aquarium Co-Op says 10 gallons and up but gives no upper limit. Don’t read that as fine for any larger tank; if you need a stated maximum, choose a filter that gives one.
Our buying guides size it for these tanks:
10 gallon20 gallon29 gallonBetta tankShrimp tank
A filter rated for your tank can still be too tall for your cabinet or too strong for small fish: see how to choose one.
Check it against your tank → Something not working? See the troubleshooting guide.
Choose and care for mechanical, biological and chemical media before buying replacement supplies.
Build the complete pump, airline and sponge-filter system, including depth, outlet and valve checks.
Included items & upkeep
- weighted sponge-filter body
- adjustable uplift tube
- air collar
Plan for the routine work
- Squeeze the sponge in removed aquarium water until mostly free of debris.
- Brush the air collar during monthly service.
To budget for replacement media and supplies, use the first-year cost calculator. For how often and how to clean it, follow the maker’s manual.