The LBS Series wavemaker circulation pumps are perfect for medium to large fish tanks. This pump can be used specifically for systems needing constantly moving waves, such as coral, cuttlefish, and various other species of sea creatures. This pump is totally submersible and has a 360-degree rotation. This pump comes with a controller that allows you to adjust the power and wave frequency as you please. Each unit has a magnetic attachment, which allows you to place it where you desire.