Hey Guys, I am new to this. On my third round of growing. First two turned out they were males, I got smart and got feminized seeds.
I have two feminized OG Plants growing in their own separate box, hydroponically. One box is 16"x14"x4', the other is 16"x16"x6'(WxDxH). They are 60 days old today. How do I know when they pre flower? Do I make them pre flower by changing the lights to 12 on/12 off? I have 3 of the grow books, but they aren't very specific on hydroponic stuff and such.