I just went to the hydro store close to me cause they just moved the store. Anyway they are setting all thier stuff back up. They have a nice 3x3 E/F table and they were putting 5 inch net pots in it and 6x6 rockwool cubes just sitting in it. Nothing else so I ask and they do it to sell plant out of it. Some roots will come out but not too many. They said just don't jamb them in and the roots won't tangle. They had a hut set up with a 2x2 E/F and a grow bag setup with drip to waste.

Anyway you only need the hydrtron if you grow big and need to hold up plants.