Grey Water TankThe Grey Water Tank is designed to be used as collection tank for waste water from showers, sinks, dishwashing machines, etc with 19mm, 25mm and 38mm inlet ports, and 19mm and 25mm outlet ports. The tank includes an Ultima Switch for automatic operation and is easy to connect to any 12V/24V pump up to 20 amp. The tank is prepared for Viking Power 16, with pre-drilled holes for the pump.