Duralistics White Flood and Drain TrayFlood and drain trays are designed for use with hydroponic flood and drain systems. The tray is regularly flooded with hydroponic nutrient enriched water allowing the growing media to soak up the solution, then the excess solution drains out while air is drawn down around the plant roots. Flooding and draining are done with the aid of a pump and a timer. Made of 100% Recycled ABS Plastic with Virgin ABS Cap on each side. Manufactured in the USA using