CO2 Boost is a safe, easy way to add CO2 to your grow room, growc hamber, or any enclosed gardening area. CO2 Boost will enrich your CO2 level for 60 days (up to 90 days in some cases) without heavy tanks. Completely natural, 00% organic and odorless! Simply plug the included air pump into your 15 minute timer, and run it during the lights on period (when plants can really use the CO2), then experience the benefits of increased growth rates by up to 6 times. No more messing with complicated CO2 emitters or generators, just plug in CO2 Boost and watch your plants grow. No costly start up and maintenance fees! No hassle of CO2 tank replacement! No hazardous gas burning! No plant damaging heat production. If your growroom is properly sealed, you can achieve optimum growing levels at 1200-1500ppms in areas up to 10 x 10 x 10 feet. If your growing area is larger than that we suggest multiple buckets. The manufacturer guarantees CO2 output for 60 days if used constantly. If you coordinate it with a timer to coincide with your lights on/lights off phase, it could last you 75-90 days. Once your bucket has expired use the remaining ingredients as high grade fertilizer!