Fluval Bio-Foam+ for 306/406, 307/407 Canister Filter, 2-Pack

Designed specifically for Fluval 306/406, 406/407 canister filters, Bio-Foam+ performs double duty as both an effective mechanical and biological media.. Compatibility. 306/406 Canister Filter. 307/407 Canister Filter. Features. Mechanical/Biological filter media. Dense structure ideal for trapping small particles. Intricate, porous network provides vast surface area to facilitate growth of beneficial bacteria. Helps create clean and healthy water conditions for fish and plants. Convenient 2-pack format