Sun JVP wave makers are dynamic and fully submersible which will have your aquarium cleared and revitalized. With articulating ball joint, this maker allows a full 360 degree rotation to generate waves of water movement. This item can be used to improve oxygenation as well as to let your fishes, corals, and other aquatics enjoy a vital and energetic ocean-like circumstance. An inexpensive way to improve water movement especially for saltwater coral, reef, or fish tanks! No more debris settling on the bottom or in the corners of the tank. No any sand being blown away from the bottom leaving a bare spot. No annoying noise. No other side effects to the fishes, corals, and other aquatics! Power: 110V / 60Hz.