I'm not loosing water per say. I actually marked on my pool tile with dry erase and the water didn't move overnight, if so it was so slight I couldn't tell.

It does freeze in OK in the winter time. I don't know what the frostline is here, but I was golfing on Jan. 7th this past winter. It was really warm. My pool got no more than a very thin sheet of ice on top.
Guess since I'm home I'll go bail water and start digging some more.