Well, I think I've finally got this thing conquered. Is it possible for the water to use a rock as a wick? I lifted a rock that was half in the water and the water level was just below the edge of the liner, but the area at the outside of the rock was damp, actually quite damp. So I moved the rock and left it all night and the level is still as it was when I last checked at 8:30 last night.
I will agree with one thing mentioned when I first posted my plans, and that was by Tadpole "Am I correct in assuming that you are planning on doing this installation yourself? I would strongly recommend that you DO NOT attempt a feature of this size without any prior experience. "
I have now developed much respect for all that are in this business, and thank all who helped me in many areas of this project.