I've been struggling with water quality problems, and running the filter 24/7 for a couple weeks. Friday I noted more of a drop in level than would be just evaporation, so I marked the pool level and set out a measuring cup filled to the one cup level. Saturday morning the pool was down by 3 inches, and below the skimmer inlet.
Since the liner is old - it has two tears above the water line, I suspected a liner leak. Since the water was cloudy, I added some flocculant from Leslie's Saturday afternoon. It calls for 2 hours of recirculation, then no filtration for 1 or 2 days. I also marked the water level when I shut off the pump.
This morning there was no perceptible drop in water level.
I suspect a leak in the pressure side. Does anyone have any experience in dealing with this? I hesitate to replace the liner before this newest problem is fixed.
The pool is inground, about 25K gallons.
Sand filter, 1 hp pump.
Thanks for any advice.