Hello again time for an update on the grow.
As for the system ever clogging up with roots and causing a spill, well yes and no. The roots tend to get pretty thick in the trays near the end of their life. What i do when this happens is just turn down the flow valve at the top of the system. I just try to keep the flow/drain ratio even and it is spill proof. As far as how long/tall do i let them get before flowering. I dont really tend to go on hight because i seem to have enough head room. Usually its just around 4 to 6 weeks of veg. 6 being the maximum , when i go that long they do get a bit tall during the stretch.
So here we go into some flowering plants. This room has the same 2x1000w but has 2 additional trays. Now these plants are going into there second week of 12/12. One side was vegged for 5-6 weeks the other 4. There is a fairly obvious difference between the to. They are under sodium bulbs only and the results are the same. I let the camera take in all the red to show the transition in color. Dont worry there wont be anymore extreme red photos like these after this...

Little baby bud just starting to form...

Soon to be a nice sugar coated bud...

I guess ill continue with some more buds that are a little more enjoyable to look at. Stay safe and keep growing.