Natural water movement is essential for the modern reef aquarium.

The Aqua Medic Wave is a microprocessor based controller that can operate up to three circulation pump circuits and one filter pump circuit, to simulate natural surge and wave effects.
The Wave can activate the pumps in 8 different programs to simulate many different current patterns. Between zero and three pumps operate at any one time. The activation frequency can be adjusted. The fourth channel (filter pump) runs continuously but when feeding the aquarium's inhabitants, especially invertebrates with planktonic food, a feeding pause button can be activated which stops all the pumps, including the filter pump, for approximately 10 minutes.

An integrated light sensor ensures that during darkness no more than one circulation pump is active at any time.
If you use the wave in the cabinet (durable darkness), you have to buy an external light sensor to use the night rhythm

Each channel can be used for pumps up to a loading of 100 watts.