they will grow 2-3 times their in height, after you change photoperiods. If you are growing in that tub alone...I would flower soon, or they will overgrow each other, and your yield will suffer; In quality, and true quantity. I also feel you have more chance of 'Hermies' when you get the plants all inter-twined.

Since you are in the production cloner-type system, you will have a more friendly grow, if you allow each of the plants to have a little space to breath Seriously.:thumbsup: This also allows better light penetration. This is where I believe you make up your quality and yield.

As usual I put a familar disclaimer to my opinion's...To each his own, My way works for me, and I hope it will help you out.:smokin:

lw