AQUATOP CPS-24 Circulating Pump AQUATOP's CPS Series of circulating pumps provide a new and innovative method to create vital water movement in either your fresh or saltwater aquariums. The CPS-24 Circulating Pump features an articulating ball joint that allows for a 360-degree range of motion allowing for water movement in those hard to reach areas. AQUATOP has a super sturdy suction cup mount that is capable of adhering to any glass or acrylic surface up to 15mm or .6 inches thick. The CPS-24 has a dual high flow impeller system that uses a ceramic impeller shaft which is stronger than traditional plastic, and is capable of moving up to 3170 gallons of water per hour promoting a healthy stagnant free water environment. The dual high flow impeller system on the CPS-24 is capable of moving up to 3170 gallons of water per hour on just 24 watts of power. It also uses a ceramic impeller shaft which is stronger than traditional plastic ones. Promoting a healthy, stagnant free water environment for your aquariums.