I didn't wait for hubby to get off this weekend, but chose to uncover myself and find that cause of my worry! I have went over the entire pool surface just above the water line and I have found NO holes, rips, tears, or even a rough spot. NOTHING! Even the seam looks as good as it did the day the pool was installed! The water level has stopped at the returns, so I am thinking it might be them, but I did a dye test and found nothing sucking the red out of the water! Nothing again! The only thing left is the returns. Do you think I should replace the face plates on those things (they do look a bit ancient, never been changed that I know of) and replace the winter plugs with the o-rings? Any thoughts, ideas or help would be greatly appreciated!