I have run 18/6 for veg but now run 24/7. As far as vegging I see no dif. The reason I run 24/7 is because I work in the veg room at all dif hours of day and night. It seemed that turning the light on and off during the dark period kind of freaked the plants alittle and took longer to start seeing white hairs when put into flower.

I might be in there at any time just watching them grow if I can't sleep. LOL
Only because I can't watch the buds grow for 12 hours a day. Life's a bitch when you can't sit on the porch and watch the grass grow.
LOC NAR on probation Reviewed by LOC NAR on probation on . 18/6 or 24 hours? It seems that on more then one occasion I have read where someone uses 24 hours of light for vegetative growth. I currently use 18 hours with 6 rest, but why do I do that, if the next guy is growing 24 hours a day? Exactly what is it that occurs during the off cycle in the veg state? Why can one guy do 24 hours and the next guy feel the need to do something shorter? If I can get more growth by leaving the light on 6 more hours each day, then what's stopping me? Anything? I have seen Rating: 5