Marineland Rite-Size X Canister Filter Polishing Filter Pads for C-530 - 6 Pads Total(3 Packs with 2 per Pack) 6 Pads Total(3 Packs with 2 per Pack) Marineland Rite-Size X Canister Filter Polishing Filter Pads for C-530 Screens Out Particulate Dirt and Debris In the event of excessive buildup, you may gently rinse with water from an established aquarium Do not clean with soaps or abrasives and never rinse with unconditioned tap water