Square plastic basin fits hydro for support pedestal and water capture drain. This basin is designed to set on the floor of your hydro shed. The basin has two side holes. One hole acts as a service access panel with a plug which allows reaching inside without removing your plumbing and the other hole adapts to a 6" drain pipe that you provide. The lip of this basin typically needs to be slightly grooved where your nozzle ports pass over it. Pictured: Hydro base is black; ES&D Adapter is silver.