The Penn Plax Cascade 1000 Canister Aquarium Filter is a heavy-duty external filtration system. The Cascade 1000 (CCF3UL) is for aquariums up to 100 gallons and pumps 265 gallons per hour (GPH). Delivering powerful mechanical, chemical, and biological filtration, which produces crystal clear water in both fresh and marine aquariums. Crystal Clear Water for Fresh […]