"Anybody interested in schooling me as to liquid level in relationship to bottom of netpot or oasis cube (initially, and then as the roots grow). I??d be obliged."

No obligation, brah.
It's paid ahead.:eat:

The actual level is not as critical as one would think.:jointsmile:

Anything from 1 inch to 6 inches will do.
It's all about good aeration.
Good aeration means lotsa bubbles and the popping bubbles will splash surprisingly high.
You will see tiny water beads on the roots 10 inches from the water surface.
A bamboo skewer poked through a hole in the lid and stuck into a cork makes a dandy, bubba kine, level monitor.:rastasmoke:

Aloha,
Weeze