Darlin', it's CO2. Plants breathe Carbon Dioxide, like we breathe oxygen. How effective it will be depends on the size of your grow area, the temperature of the water and how air tight the grow area is. In my little clone/seedling cabinet (about 6 cubic feet), I use a milk jug with yeast in it. I add a spoonful of sugar a couple times a day. It fizzes right up releasing that good CO2! In a small space, it will work fine.- Granny:hippy:
Storm Crow Reviewed by Storm Crow on . Our Female at Last Out of several plants we can finally say we got a female, she seems great, just getting tall as shit right now and may have to be moved or tied down so not to outgrow room. May take it outside to shed we have in backyard and hook up the light in there as it gets pitched dark in there and she should finish good in there and the smell is really bad this time around anyway. ALSO is it true we heard that you can take a large bowl and put in yeast and sugar and hot water and close door to room and Rating: 5