Quote Originally Posted by Italiano715
No debate about that...12 hours of uninterrupted darkness is a MUST. Otherwise, you WILL get a hermie. Also, if you are not sure about light leaks, then when your lights go out go into your grow room, close the door, and look for any light leaks and be sure to seal them. You could lay down a small towel or cloth at the foot of the door to seal that leak.
Well, there is some... some people run 13/11 and there is the "martian night" being tested as we speak. But when it is the dark period it must be absolute dark, no debate there.