yeah... I just cant see it happening in a pc box. I am estimating about 6sq feet of space is needed for one of my plants. I am sure she would scream if I tried to stuff her in a box. Thats kind of cool growing in a pc box though... im going to have to try that some day. I still think you could up your output though by going scrog in there. Grow your plant up to about half height and put a screen in there that you can route the branches horizontally on just below your lights. Its not going to affect how fast they mature, but it will allow you to manage a few more budz out of it each time I would think. Its what I would do. What are you doing now when the growth gets out of control? clipping it?