Penn-Plax Cascade 500 Canister Filter Replacement Impeller (CCF115)
Penn Plax Pro-Carb Filter Bags for All Canister Filters – Filled with Activated Carbon for Clean Aquarium Water – 8 Ounces, 2 Pack
Penn Plax CCF131 Cascade 500 GPH Floss Pads, 6-Pack
Cascade 500 Canister Filter Parts F. Gasket by Penn-Plax
Penn Plax Cascade 500/350 GPH Canister Filter Aquarium Bio Sponge Replacement; 1 Pack
Penn Plax Cascade 500 GPH Canister Filter
Penn Plax Cascade 500 GPH Floss Pads, 24 Pads Total (4 packs with 6 pads in each pack)
Penn Plax Cascade 700 1000 GPH Floss Pads – Filter Pad Keeps Your Aquarium Clean and Clear – 6 Pack