Compatible Filter Carbon Ring Service Kit Fit for Biorb Aquarium

Pack of 12 Compatible Filter Foam Sponge Service Kit Fit for Biorb Aquarium

Pack of 12 Replacement Bio Sponge Compatible with Cascade 300 Internal Filter

Pack of 6 Replacement Bio Sponge Compatible with Cascade 300 Internal Filter

Pack of 8 Replacement Bio Sponge Compatible with Cascade 300 Internal Filter

Replacement Filter Foam Bio

Replacement Filter Foam Bio

Replacement Filter Foam Bio