Hydor Koralia Wavemaker 2 ControllerThe Hydor Koralia Wavemaker 2 (TM) is low voltage controller exclusively designed for Koralia 12V pumps (1 or 2, same or different models). Ideal to create beneficial wave and tide effects in marine aquariums with the possibility of setting minimum and maximum flow and timer. The Wavemaker 2 (TM) has great flexibility! You can connect 1 or 2 Koralia 12V low voltage pumps, same or different models. 2 blue LEDs on front panel indicate pump setting and functioning. The Wavemaker 2 can produce a wave effect by setting the timer between 2 and 15 second or a tide effect switching the flow on and off every 1 to 6 hours. The power of the pumps can be set by operating on the minimum and maximum controls to better suit the needs of the aquarium. To set pump function mode, alternate flow mode with pumps one at each side of the aquarium, operating on minimum and maximum controls, the flow can have a wave or tide effect, ideal for reef settings. Synchronous flow mode pumps operate simultaneously at minimum or maximum flow and can be set to on/off mode to create strong tidal effects. When it is time to eat set the controller to food mode. It is an easy function to allow feeding of fish and invertebrates in reef aquariums. Just click on the SET button and the pumps are slowed down to the minimum power setting for 5 minutes.