Aqueon Circulation Pumps are designed to simulate natural river and reef currents found in realistic aquatic environments. Each pump includes a robust locking suction cup to minimize vibration, making operation quieter. The ball and socket connection point allows for directional positioning of water flow. The energy-efficient motor uses less power while increasing water movement. The Aqueon Circulation Pumps are available in five sizes for use in freshwater or saltwater aquariums.