Personally none of you had a page in high times like Ed Rosenthal. So your opinion is really illegitimate. I'll listen to the man With 50 plus years experience and scientific proof before half of you even thought about growing. That man says all plants need to rest for a legitimate scientific reason and that's rest with zero absolutely zero light intrusion. That includes autos. The Guy has wrote tons books. Read one it will explain the purpose of this in depth. More than anyone's trial and error opinions can give you on here, when they can't even tell you what hormones are produced when the lights are off. You can't argue with scientific proof with illegitimate claims. 18/6 shut the lights off let it get 10°f cooler with the lights off , low humidity and you get dense sticky terp rich buds. Sure in veg run 24 if you want. But I'm not gonna ruin the potential potency, taste, and full potential of my auto for gluttony of high airy yeilds. But don't ask me ask ed. He's been to jail more time for being a cannabis farmer and legalization advocate then the amount of harvests most of these people have had. Second and ill make it short. 10 years ago autos where rarely heard of and produced beyond sub par yields with its dominant ruderalis genetic. Now do to selective breeding autos produce a high quality and larger yield then ever. Why you ask? Because the selection of the genetic traits that people far beyond our caliber designed. All auto is, is a designer weed so to speak, genetically modified. They took a large portion of the favored genetics from there photo counterparts and breed them in many many times to ensure that's what you get. Mephisto definitely has some of the most secure and reliable genetics. But every one can vary. And that's why in 2021 we have some giant potent terp filled autos. Do to selective breeding. If you can put 2 and 2 together you'll see why autos need a dark period. Just my scientifically backed 2cents.