I never used a airblock. (which allows pressure to excape with air not being drawn back in, dont want it to blow) I would take a 7 gallon tall camping water storage contain and attach a garden hose to the spout (perfect fit) and put the hoses (had a few) through the wall of the grow room to excape in front of a fan. Shake them twice a day after adding 2 pounds of sugar and 30 + ml of active yeast with 4 to 5 gallons of water.

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karmaxul Reviewed by karmaxul on . CO2 sources? I need some Ive grown a couple times already, so you can understand why I'm embarassed to be asking this question now, but what are some sources of CO2 that are simple to use? and im not talking about machines or anything, i have no room for that shit. Rating: 5