2x HQRP 30 ppi Foam Pads for API Rena Filstar XP Series Aquarium Canister Filter
API Rena Filstar XP Series Aquarium Canister Filters. Compatible with Filstar XP Filters;. HQRP trademarked products. Foam Pad should be cleaned monthly and replaced every 3 months. Rinse foam thoroughly before inserting into filter.