Nug of the Month: Feb, Oct 2018, Mar 2019
so you're forcing the plant to flower from being rootbound, then you uppot. Why do you do that? What would happen if you uppotted now - before alternating leaves - and then flipped to 12/12 or (11/13)? would it transition to bloom a little slower?
sorry for being late to the party. I just found this thread last week. I have so many questions!
The plant does not start flowering because it is root bound. He gets them root bound so that he can transplant and flip the same day. By having the plants root bound before he does this the root mass, and thus the plant itself, explodes with growth the first few weeks of flowering. You are also giving the plant a fresh 6 gallons of soil to play in all through flower when you do it this way and thus there is plenty of soil energy to carry the plant through flower typically.