Sponge filter.

[Diamond]

hey guys, clark rubber sells filter media. i bought some and going to make the sponge filter myself. i bought a whole heaps, just wondering if anyone has done this?
I just roll the sponge up like a cylinder and squeeze the airline into the middle.

[taksan]

maybe ...could be poisonous

[Diamond]

its been fine with goldfish and koi and discus.
u can see the material is same as some canister filter material.

[fw05racer]

yes clark rubber do sell foam. I bought the aquarium one from them and its been good for everything!