Penn Plax Cascade Canister Filter Bio-Floss replacement pads help trap floating particle matter, keeping your aquarium water crystal clear. Replacement is simple and convenient to keep your filter cleaning.

• Poly fiber floss pad traps floating particulate matter
• Convenient, no fuss replacement floss pads
• Fits Cascade Canister Filters

Specifications: Replacement pads for Cascade 700 & 1000 Canister Filters only. Replacement pads for other models are also available.