Does anyone else think that yeast sugar and water makes a good co2 system. I put 2 in my 5x5 tent with 3 plants. Used a 5 gallon bucket with 1.5 gallons of water, 6 cups sugar, 2 packets instant yeast(should last 2 weeks b4 replacing ingredients)
I don't personally do this - or anything else to produce co2, honestly - but I've seen comments from a lot of folks who do and they say it works pretty well... I think m0use has practical experience here... I'll make sure to ask her to look at this question and give you her thoughts....
Good luck!