Read Mr Grow it’s start here section. use His technique and trial and error. It’s all explained there. I use it. His newest book is killer.
@Budman63 I was looking there but saw nothing about time in terms of hours.
Should run 18/6 until your ready to flower(presuming you're growing photoperiods). Days are a general guideline, when you feel you have the plant the way you want it go ahead and switch light cycles for flower. If your growing auto flowers no light change necessary.
@mwhite9829 I appreciate that. I’m running photos not a fan of autos although I am going to grow some once day just to learn how the grow.
18/6 for Veg and then keep it on that for the entire lifecycle if growing an autoflower plant. If you're growing a photoperiod plant, 18/6 for veg and then change to 12/12 when you want to flower.
@Mr. Grow It I appreciate it. 👍🏽