Well I'll tell you... I've been practicing the dark thing for a long time. I don't know how many years many.. I guess. We never knew if it was really true or not about it creating something better by doing it..... The guy I work for he does it with his large commercial crop. And all his commercial Grow Buddy's all do it as well....
So while back I had this discussion with another guy... I read it elsewhere but this is what I found a year or so ago. that is probably more conclusive than the study I read....way back when...lol
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So yes it's pretty conclusive that it does something.