There was a pic on one of g-loves threads where he cut away all the fluff from the root mass, and there was a ring of tap-roots shooting down. Also, he confirmed that there was a substantial growth spurt once roots hit the mat. I spent the entire day reading through his threads. I feel pretty silly never signing up @ uk420 to see those. Very inspirational stuff! Even when things went terribly wrong, he pulled through with his dignity intact, and some pretty nice nugs. I feel re-inspired. I got a beast of a bush goin in a dwc experiment right now, but I suppose I should soon source a fridge compressor & a propane tank.
Edit: If there's anyone interested in g-loves journals, but don't like signing up to a s-load of websites, pm me and I'll let you use my login. I don't plan on posting there, so I don't much care. You owe it to yourself to see them!