yes it's definatly switching time. if you dont switch now
you roots will continue to grow circle around the bottom of
that cup and pruning itself. All of this is going to slow you growth
down and possibly decrease yield in the long run.
so its up to you to switch now or not, but thats what you'll most likely be looking at
I would definately switch to bigger cups! I think I read you were using 9 oz. cups, get the biggest you can, maybe even a Big Gulp cup if you wanna run to 7-11!