Wall Mounted Hydroponics Growing Planting System Kit, Soilless Cultivation PVC Pipes for Gardening 37839200Description: High Yield and Quality: Soilless cultivation with nutrient film can meet the production potential of crops; Compared with traditional soil cultivation, the yield can be doubled with requiring less water and less space With Timer to Save Effort: This hydroponic planting system kit of PVC has a timed circulation system; The default setting of the timer allows the pump to work for 5 minutes every 30 minutes to reach the nutrient film