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http://www.420magazine.com/forums/do-yourself/115134-diy-co2-generator.html this has good reviews, and yes they work, approx 200 ppm ea with this set up. some more helpful info on determining amount of sugar and yeast. Just some helpful info I came across on the topic. A few things about...

Just some helpful info I came across on the topic. A few things about this, I've just been doing a lot of research on this and there is some miss(ing) information. In the air outdoors, CO2 comprises about .038% of the total gas (380ppm). If you have a closet growspace with the door open and a...

A few things about this, I've just been doing a lot of research on this and there is some miss(ing) information. In the air outdoors, CO2 comprises about .038% of the total gas (380ppm). If you have a closet growspace with the door open and a fan running, this allows for gas to equalize so you...