Aqua Gardening stocks products to generate and control the level of CO2 in your indoor grow room. Plants breath CO2 as part of photosynthesis and when higher levels of CO2 are used in hydroponics, it results in increased plant growth and yield. We have CO2 generating powders that create CO2 in your grow tent and boost plant growth. We also sell a professional CO2 monitor which actively monitors the level of CO2 in your grow room. The CO2 monitor can be used to automatically switch a CO2 bottle on and off using the CO2 regulator kit.