Oh, and I was thinking about your "yellow" concern a page or two back.
I've noticed that during the aggressive stretch phase of bloom that they can grow quite a bit in one day, and even at night. One thing I've seen is that when the lights first come on, they can look pretty yellow. If you look at the same plants right before the lights go off, the yellow seems to have disappeared, only to come back again when lights come on... I think it's mostly just new growth that has yet to green up. After stretch it seems to quit for me, too. Also, bloom ferts don't have as much nitrogen, which probably contributes, too. Just spewing another thought all over your journal...
I've noticed that during the aggressive stretch phase of bloom that they can grow quite a bit in one day, and even at night. One thing I've seen is that when the lights first come on, they can look pretty yellow. If you look at the same plants right before the lights go off, the yellow seems to have disappeared, only to come back again when lights come on... I think it's mostly just new growth that has yet to green up. After stretch it seems to quit for me, too. Also, bloom ferts don't have as much nitrogen, which probably contributes, too. Just spewing another thought all over your journal...