Penn Plax Cascade Canister Filter Bio-Sponge
For use with Penn Plax Cascade 500
SKU: 918822
Convenient, no fuss replacement sponge for your Cascade Canister Filter optimizes colonization of beneficial aerobic bacteria and removes ammonia and nitrites.Custom cut to fit your Cascade 500 Canister Filter.
Penn Plax Cascade Canister Filter Bio-Sponge
For use with Penn Plax Cascade 700 & 1000
SKU: 918830
Convenient, no fuss replacement sponge for your Cascade Canister Filter optimizes colonization of beneficial aerobic bacteria and removes ammonia and nitrites.Custom cut to fit your Cascade 700 or 1000 Canister Filter.