Aqua One 404s Black Sponge Pads – For Advance 1050/1250 Canister Filters – 2 pack

A new 404s twin pack of black fine Aqua One Sponge for the Aqua One Advance 1050 and Aqua One Advance 1250 external Canister filters. Open cell foam makes superb water filtration material because it both traps debris and acts as a good home for nitrifying filtration bacteria.