On the topic of CO2 I think I have a good question for you tranoble. But before I pick your brain, I want to say super thanks for this info and I have been able to utilize some of your methods which have proven very valuable to me.

I am using a digital CO2 ppm meter/controller and I am trying to zero in on a final system for enrichment. I have a burner but my cooling system cant handle its operation if I am trying to keep ppms up for the entire light cycle. I can definatly hit target ppms range and I can stay there for a couple hours before the burner heats the room over the air conditioners capacity.

My room is a "sealed" room (thanks to this thread alone by the way), although calling it air tight is kind of pushing it, I have tried to plug every in and out to the room but I can watch the CO2 ppm meter after either a burn or injecting CO2 that the ppms really take a dive as soon as the source is shut off. I can watch humidity and I wish it would take as much of a dive as CO2 does but it does not.. which proves the room is like 99.something% sealed.

I guess what im asking, do you see CO2 ppms take a dive as soon as you shut off your burner? Like if I shut off the burner at a stabilized 1500ppm I can watch ppms dive to 1000ppms in about 5mins. Is this normal? I thought it was a sealing issue but I have "great stuff"'d the hell out every crack and I think its very tight. I would hate to think how fast I would use up CO2 cylinders.. but anyways..

It brings to question, I have read many books which preach the 4 time saturatuon per light cycle method and I havent run into any reputable info that supports a constantly increased ppm steady through the whole light cycle and you are the only one I know that reccomends it. Now, it makes complete sense, and moreover I really respect your insights. Im stuck right now with making a decision to upgrade cooling (buying an even larger AC unit) just to run constant increased ppms or going old school with 4 times a light cycle and I would really apreciate your input.

Your words are like gold to me so I would really appreciate your opinion on this!
Aaron385 Reviewed by Aaron385 on . "THE SEALED ROOM" 3lbs A LIGHT THE SEALED ROOM Listen im not very good at writing this stuff down. You can post reply's with any specific questions and I will answer them best I can. My pictures of my room are 1 week from cutting down. Based On A 4 Light Room. Pictures are of a 8 Light Room. I start by sealing my room as best I can. From there I start by building a 8ft by 8ft box with 2x6. Then I screw 2 sheets of OSB 4x8 sheets to the bottom (sort of like a water bed box). I line the inside with polly making Rating: 5