Can you tell me what size pots you use initially, before switching to 12/12? I just nurtured three plants in 3-gallon pots to 15" height, and had 2 males and 1 female (first grow ... only got 1 female in the end from 5 white widow seeds). Next time I want to use smaller pots and still get to 15" height before 12/12 so I can grow more plants and toss out all the males based on preflowers, without wasting all the precious light space and soil needed for the larger pots.I have used MG Moisture Control for 3 years..but I mix 1 part MG, 1 part peat moss and 1 part pearlite. After I transplant to 3 gallon and change to 12/12 I also use Shultz 10-15-10 liquid fertilizer every other watering. Never had a problem with burning. I average about 1.5 oz per plant. Just my experience.....
Is a 1 gallon pot enough for this if growing in soil (or a soiless mix, no hydro)? I got to 15" height in 29 days from first sprouting, and the roots in the 3 gallon pots were already starting to circle at the bottom of the pots in the males I killed. But it sure would be easier to use the smaller pots until the preflowers appear, then transplant the females to larger pots at the same time 12/12 is initiated (which it sounds like you are doing).
-Snake