Is the CUBE compatible with my existing Quooker-system?

A CUBE provides chilled and sparkling water straight from the Quooker tap. The CUBE can be installed in the kitchen cabinet underneath the sink. A filter is included that makes the water as pure as bottled water. To dispense sparkling water, a Quooker CO2 cylinder must be connected to the CUBE. Save water and plastic, use a Quooker CUBE.
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Enter the serial number of your tap and reservoir

You can find the serial number of your tap on the label attached to the thin black cable that comes from the tap and is connected to the back of the Quooker-tank.

The serial number of the tank can be found on a sticker on the side of the Quooker tank