Gemini Recirculating Pot Grow PotsGemini Recirculating Pot Grow Pots The Gemini Recirculating Pot is a one plant recirculating hydroponic system. The plant is grown in clay pebbles and they hang over the tank filled with a nutritional solution. The solution is pumped through the clay pebbles using the specially designed laser cut flow ring directly to the roots of the plant. The Gemini comes with a floor insert thats gives you the option to decide on the amount of media you use.