Ok so these are two months old today, they're at 16" and seem to be doing quite well. My question is should these be bigger? Minding that I had a few problems before getting the feeding schedule corrected. I have read a few articles on flowering but have mixed reviews about when to start long nights. One has read that in the flower stage the plant increases in size by twice or three times. Any suggestions?
Nice recovery from the burn! Well done. As far as when to flower - depends on how much space you have. Expect an indica to double in height and a sativa double or triple or more in stretch. If height is an issue, training is always an option. Tie the tops down if you need to.