SuperPonic SuperFlow 20 Site Ebb and Flow Hydroponic SystemGrow your plants 5X faster than traditional watering systems with this 20 Site SuperPonic SuperFlow. It is the first non clogging Ebb and Flow Hydroponic System that can hold thick and natural nutrients, thanks to the large sized tubing. The reservoirs and trays are custom molded and manufactured using HDPE food grade plastic. It makes the system UV resistant and the best Hydroponic grow System. Snap Cap Plant Tray Lid: Plant trays come with snap cap