Hydor Koralia Wavemaker 2, Low Voltage Pump Controller
ALTERNATE FLOW: With the Wavemaker you can create quick alternate pulse-like flows for a wake effect, or have a tidal effect by settings the flow to anywhere from one to six hour alternate periods. Alternating between the two pumps can be anywhere from a minimum of two seconds to a maximum of six hours.
SYNCHRONOUS FLOW MODE: The two pumps can be set to gradually increase flow from a minimum to a maximum setting.
FOOD MODE: In food mode the pumps can easily be turned off for feeding periods.
NIGHT MODE: For night mode the pumps can be set at minimum power.
Another great feature is that you can interchange between the five different size 12 Volt Koralia Water Pumps, so it can be used on any tank, depending on the maximum water flow needed; making this item a great investment for your money.