I'm thinkin' if you keep your res at 56-58 degrees then you'll have an enriched res.with or without the stone. The reason for the stone is so your nutes stay circulated.. Yes it does indroduce oxygen to the roots. The plant above the roots thrives off of co2. The roots thrive from oxygen.

I just can't see that adding oxygen depletes it after less than an hour? My air pump runs 24/7 as well as the stone bubblin'. That plant has taken over the tent! If that were the case then mine would be DEAD! I'm curious as well..

Ga.