Carbon Dioxide in your personal indoor garden or indoor grow is a great addition to increase yield, produce stronger and faster growing plants and flowers. The EZ CO2 works best for any indoor garden grow light system like HID HPS MH Grow lights, LED grow lights, or florescent. Make sure to keep the EZ CO2 Bag above your plants because carbon dioxide is heavier than oxygen. The new green way of adding CO2 to any small gardens is now here! Also compatible with hydroponic, aeroponic, or soil grows.