Net pots are small, plastic containers shaped like a red-plastic cup with slits in the sides and bottoms to allow roots to grow through. Used in hydroponic applications, their near universal status as planting sites is in many ways thanks to their low cost, dependability, and wide …amount of applications. Net pots can be filled with grow stones, hydroponic clay pebbles, coco chips, or peat plugs to provide a strong base for your plants. They usually sit within a lid to a system and can be moved from one container to another with ease. Shop now for net pots at HTG Supply.