3 Pack 8 Oz Pro-C Mixed Aquarium Canister Filter Media Bag (Activated Carbon + Zeolite) for Penn-Plax Cascade Filter Parts, Also fits Eheim ECCO, Eheim Pro/Pro II, AquaClear 500 and FilStar Canisters

3 Pack 8 Oz Pro-C Mixed Aquarium Canister Filter Media Bag (Activated Carbon + Zeolite) for Penn-Plax Cascade Filter Parts, Also fits Eheim ECCO, Eheim Pro/Pro II, AquaClear 500 and FilStar Canisters