I have to disagree with jamstigator, because if what you said was true than you couldn't hang your fluorescents within inches of plants (which you can.)

Run your fans and your CO2 system on a timer so the fans turn off (except for an oscillating) when the CO2 Turns on, I somehow highly doubt you'll have significant heat problems from turning the vents off for an hour a day to give your plants CO2.

Lookin' good Tico! Can't wait to see how much bud you get.
Buddahbear Reviewed by Buddahbear on . New Wave T5 Grow...IM NOW A BELIEVER !! Hello there fellow growers. I have been growing for about 4yrs now using 1 400w HPS and 1 400w MH with a conversion bulb, 800 watts of growing power.A friend of mine recently invested in the HO T5 system 2ft x 4ft 400w total power. I must admit that I was really doubtful about using this new technology of marijuana growing. After seing his results iin three different crops I decided to go out and get one for myself. Since I have started my new crop with this new light I have nothing but great Rating: 5