Multi-directional turbulence makes ocean fishes and reef organisms thrive. Correct water movement encourages proper exercise for marine fishes, keeps immobile corals and inverts clean of deadly sediment, distributes trace elements and food evenly and pushes waste to skimmers and filters to keep water conditions healthy. The sun sun jvp-202 fully submersible 3170 GPH wave maker 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. Really an inexpensive way to improve water movement especially for saltwater coral, reef or fish tanks.