Кофа CO2 Boost euro

The best option is to place the end of the hose directly over the plants and the second option is to attach the end of the hose on to the back of your fan. This option will distribute our all-natural Co2 throughout your room and although we suggest the first option if possible, this will work as well. Gives Cо2 by use continue 60 days, by use only when lights are on 75 - 90 days. 100% organic and no smell