i use a gallon jug with a tea spoon of dry active yeast and a cup of sugar.it will fizz like a soda for a day or two.just add mor sugar and shake,keep it in a bucket so in case of over flow.
price,4$
key2012 Reviewed by key2012 on . CO2 in Growtent??? I have read a lot about CO2 being the "bees knees" when it comes to growing.. read in two books that it increases the yeild by 20-30%.. and in other places i have read that it does even more.. Has anyone used CO2 and can shed some light on this?? i was thinking of getting a system... was also checking to see if anyone has any recomendations on the besyt sytem.. i.e. a tank or one of those CO2 tablets that you get in a premaid CO2 bucket thingy you see for sale on the internet.. all advice s Rating: 5