The AQUAplate kits contain all you need to adapt your existing AutoPot system for hydroponic growing. The Aquaplate Square fits into the 1Pot Trays and Easy2Grow 2Pot trays and the Aquaplate Circle fits into the 1Pot XL tray. Assembled in minutes the AQUAplate simply drops into an AutoPot tray. This seamless integration saves time, expense and allows you to grow in our proven irrigation system. They allow you to grow free from substrate, give plants direct root access to nutrient rich water, encourage faster, stronger root development, contains all you need to adapt your existing AutoPot Watering System for AQUAplate growing by simply dropping right into an existing AutoPot tray.