Leak- Losing 3" a day

I had a pool guy out today.

He said I am losing water so fast (8-12" /day) he thinks that the hydrostatic plug rather than a leak in a pipe/drain. My water level is down about 4 feet. He thinks the hydrostatic plug may be stuck open that a normal leak wouldn't be so fast. He also said main drain leaks are usually as low as mine has gone.

Does this make sense as a possiblity?

Hi ellry99,

It's been 5 years since your last post, but would you mind posting an update on how you resolved your leak problem? My pool is leaking the same way yours did, and I was hoping to get some pointers. Thanks!

Not sure if ellry99 will see your post or not. He/She hasn't been on the forum since last May.