Greetings all. I woke up a week or so ago to find my concrete inground pool a good 10" lower than the night before. The pump was running over night but there were no wet spots anywhere (plumbing, grass, etc). It was down to just below the skimmer. There are no visible cracks anywhere. It was suggested that I let the pool continue to drop and see where it stops which would indicate if it were leaking around a fitting (return port, light, vaccuum port, etc). Well, it has progressed steadily below both returns and below the dedicated vaccuum cleaner port and is approaching the light fixture. I tried using my Ph test dye to see if I could see the dye tracking to the leak...not so much.
So, any suggestions are appreciated!