Noooo shit.... Finally broke down & did the co2 thing. Went out & purchased a 20lbs tank, co2 reg, hose, & an Atlas 7 Titan co2 controller. So, everything was going good I thought. I had the controller on 1000PPM. Had a hose leading around my 2ft enclosed light with 6 extentions that fell off around it leading down to top of plants. Co2 would kick on really only when I would come into the room & every now & then. Well that was 4 days ago & now no co2 ??? DAMN !!! I know there could be a lot of answers for this but I have a sealed room & my fan only exchanges air when I do it manually. My room is 5X11 & 8ft ceiling so not a big room & it stays around 75F. Thinking maybe it could be too many hose holes but I have the controller to stop it at 1000PPM anyway right? Or maybe the reg. was leaking but wouldn`t the glass stay moistured on the reg. all the time then? I do have a small heater that blows into the area but like I said my room is sealed so I`m thinking I`m good there too. The only other one I got is my controller just didn`t calebrate right but it looked as if it was pumping out co2 sparsley to begin with...??? Well guess I could use some opinions or better yet,,, answers ??? So bring`em on.