GrowGrip Plant Holder (100, 1") Low-cost, reusable plant holder used for deep water culture (DWC) applications in hydroponic and aquaponic growing Replace common plastic net pots and grow plugs Ideally suited for growing leafy greens, such as lettuce, in home and commercial applications Made with a recyclable, food-grade, UV resistant low-density polyethylene foam Proudly made in the USA