Using this setup and no Co2 would work im just not sure how well. The plants give off Co2 when the lights are out and take it in when the lights are on. With no Co2 burner the plants would not be taking in very much Co2. If your not going to use a Co2 burner you might want to use an intake and out take. The Co2 burner makes a huge difference. If you ask me Co2 burner (with glow plug) and a Co2 computer is a must have. Allso if you are going to use Co2 allways set your PPM on your Co2 computer to the same as your PPM that your food is at.

Quote Originally Posted by Tom Green Thumb
Tranoble, what difference would it make if you did everything the same but didn't use the sealed room method and Co2? Have you ever done this before and what do you think the decrease in production would be? I am really just curious how much benefit Co2 really has compared to no Co2. I am sure it is a big deal as your crop looks amazing but I thought I would ask your professional opinion. Also, what are your thoughts on Co2 use?

I have read the entire thread from day 1 and I must say it is the best and most informative thread I have read in some time. Thanks for sharing this info with the grow community!

TGT