Have you noticed much side branching tho??
Ive been following your experiment and am for one, thankful to you for documenting it. I have been doing my own experimenting as well, while following this thread.
One thing i have noticed is that when the roots have a chance to spread out away from the plant, more horizontal growth happens. And when they (roots) are kept in tight, there is much more vertical growth.
Ive noticed that when i put my clones into the cup, it takes a couple days for the roots to hit the side of the cup. Once that happens, the plants stop growing out, and shoots upward. Now if i put them straight into 1G pots they grow out much more, then once those roots hit the side, they start reaching.
Ive also noted that the leaves grow outwards to about the size of the pot, not much bigger, then up.
Ive noticed that about ur plants as well, SKH. quite tall and spindly, compared to plants of the same age put into bigger pots.
oops....lost train of thought....time for a rip.....
I will conclude when done.