I’m trying to diagnose a potential leak. Symptoms:
- Water level drops more quickly than expected
- Area of lawn near pool (basically between pool and pump) stays wet longer than other areas
- I now pump the well-point after every rainfall beacause the liner corners aren't “sharp” - i.e. some water behind the liner. I used to do it only after a big storm.
I have bubbles in the pump basket, but that has been going on for longer than the more recent symptoms. The bubbles get worse when the water is less than 65 degrees and also get worse when the filter is dirty. The bubbles are definitely a suction-side leak (that I just can’t find) but it seems like the newer issues may be something else.
I ran the pump overnight and got a 3/8” water loss over about 14 hours, 7pm to 9am. (Pump running, Autopilot on, water is 67 degrees, air temp was 60 at start dropping to 36 overnight and back up to 60 in morning with most of the time in the 30s and 40s, overnight humidity was 35-95% with most of the time in the 80-95% range). Can night time evaporation can be noticeable if the water temp is 20-30 degrees higher than the air temp?
In any case, is this normal water loss or does this indicate a return (pressure side) leak?
Correction: Water loss is 3/16, not 3/8 -- reading a ruler when upside down can be a challenge