Penn Plax Bio-Floss Filter Media for Cascade 1200 and 1500 Canister Aquarium Filter Pumps, 6-Boxes/36-Cartridges;

Cascade Bio-Floss filter media from Penn-Plax works to keep your aquarium water clean & clear. Each filter in this 6-pack is specially sized & designed to fit your Cascade Canister Filter Pump. Bio-Floss filter media is made from a durable poly-fiber that traps floating particulate matter and debris and helps to extend the life of your carbon and biological filter media. Bio-Floss filter media comes in the perfect size to fit your exact Cascade Canister Filter Pump. For use on canister type filter pumps only.