I do realize that growers come innall shapes and sizes. From the guy with 5 Cfls in a cardboard box to the guy rocking 19,000 watts in a sealed garage. I do my fair share of giving INFORMED advice to newbs as I feel that I have a pretty good handle on things. Not from growing weed for years as I have not but I do have biology and botany degrees and took allot of physics courses. These really come in handy in terms of understanding plant bichemical processes, nutrient absorption, etc, etc, etc.
There are times when I just laugh when people want to grow plants upside down or impose some weird light regime on them and their are times when it's annoying. Last night was one of the annoying times I guess. I feel that I can still up my game as the best harvest I have gotten so far is 0.86 grams/watt. I am a medical grower for several patients so I really don't have the luxury of just trying different combos that may or may not work. I'm also running hydro with a central Rez so all my plants get the same nutrient combos which also really slows down the trial and evaluation processes.
The point was that if your growing with cfl bulbs or think that revegging your plants is a cost effective way to yield more buds, those questions don't really belong in the advanced section.
To the poster looking for co2 weening info, I have done both full co2 all the way through harvest and also tried weening them off gradually starting in week 6 (ppm of around 600 at the end). When I weened them off I had lower yield but more aroma. Smoke wise it was about the same. I did however run botanicares liquid compost during the ween co2 run so I think that had more to do with aroma than the reduced co2
Conclusion? I'm not sure if it is worth it. Other growers that I know that absolutely kill it do NOT reduce co2. I'm going to run it all th way though this time.