I did the dye test with the phenol red solution in the skimmer. No apparent sucking in of the dye anywhere. It just suspended in the water and floated around. I also squirted some around the light and around the return jet...nothing there either....just floated around in the water until it finally disipated. We don't have a main drain...there is a place in the deep end that looks like a drain but the previous owners told us there is no main drain so all we have is one skimmer and one return jet. I thought that was odd.....is it? (remember this is an old pool)

I turned the pump off last night and over the past 12 hrs we lost between 1/2 and 3/4 of an inch. We loss more with the pump running but I haven't measured yet.

Should I just let it keep dropping to see if it stops? If I do that the kids can't swim b/c it's already below the skimmer marker. Should I just fill it back up and call someone to come out to find the leak? Our water bill was huge this past month.

I am starting to panic a little bit about this Thanks again for everyone's help.