Ok, in attempt to really get things dialed in and optimize the root zone for max yield - I have made a change to the inner bucket configuration.
What I discovered upon harvest is that the large net buckets were not exploding with roots from the sides as I had anticipated.
Obviously it was not moist enough and all the roots hitting the sides were air pruning, only allowing the roots going straight out the bottom to make it to the bottom of the outer bucket.
So, I have decided to drop a 5 gallon bucket inside my outer drain bucket and they will be filled with hydroton.
So a full 5 gal hydroton per plant.
Here's a few pics while the lady's are drying.