CO2 question.

Are the CO2 canisters they use for bb guns the same stuff? Cause i was gonna use those for my plants

you would be better off just breathing on them

Yeah, I agree with riddleme. I remember back when I first started growing out of my closet I did the math and came to an ounce per day just for the closet. I can't believe those little canisters have more than an ounce so they might have enough for half a day of adequate CO2. Go get a paintball tank which can hold 20oz and if you have the money a regulator and if you don't have the money, use a screwdriver to put a leak in the bottle.

hey dude, just to let you know i used co2 canisters for my tent, but they really didnt seem to be very efficient since the inline fan was able to suck all the air out in less than a minute, needless to say i was havin to buy a shitton of those lil disposable ones...itd prolly be arite if you didnt have any air exchange in ur grow room, but honestly theres cheaper methods (yeast-n-sugar/beer brewing, dry ice) or like riddleme said, the most cost effective of all, spend a few mins in ur grow room as many times as u can a day...ud be suprised how much it can raise co2 levels. i saw somebody breathe on a co2 monitor n the avg breath was like 5000ppm!