My guess is that they will do both - continue to develop in the pot until root bound while at the same time growing into the secondary medium on the bread trays. I guess the question is, if they are getting adequate nutes and water from the bread trays, will it be enough offset them being bound up in the pots? Perhaps.

Post some pics, yo. I want to see what that looks like.
bigsby Reviewed by bigsby on . Question Over Roots? LED Lights and what not! Heh I am growing about 150 autoflowering plants, all various varietes under a combination of led and sodium. they are all potted up in 7" pots at the moment and i really didnt want to disturb their progress but wanted to give the roots a run off. I was going to put all the pots on bread trays elevated from the floor and let the runs run down maybe into a medium like perlite etc? will the roots run down and out or will they just continue to root bound. They are only fifteen days old and Rating: 5