Mine's all Bushy as hell,too! Stalk is thick at base, and the roots are white. Just says something is going,right.. Looks like a canna chia! Straight-out round,shoots everywhere!

We seem to be on the same track.. I tried that rockwool net pot,trick. It was in soil,though. Anyway.. It did't do what it should had due to the net pot,restricting the base of the plant. Roots,too.. I think you'll be fine,honestly! Just learn not to do it no mo! I did... The twenty ????'s ..... Don't matter to me! Ask away! I'll help ya best I can!

Ga.