Hi there, Just bought a new (old) house with an IG rectangular pool that was installed in the 80s. It's 18x38 w/ an evaluated spa and surrounded by an 840 sq ft concrete deck on three side. We had the deck replaced by one contractor and had another contractor reduce the deep end to four ft and replaster the pool and spa.
After refilling, we're losing ~1 inch every 12 hours while the pump is running. Since we have new plaster, the pump has to run constantly for the 1st two weeks (according to the plaster company) or our warranty could be voided. I took the following steps to isolate the leak (thanks to this forum for lots of good info).
1. Left the pump off for 12 hrs and confirmed no significant water loss.
2. Confirmed no water loss down the waste line
3. Isolated the return lines to the spa and confirmed no loss in returns to the spa.
I suspect I'm left with a return side leak to the pool. I checked for water around the perimeter of the decking, but there's no visible signs. I calculate that I'm losing roughly 30 gallons per hour, but not sure where it's going. I fear it's under the widest section of the deck that faces the house though I can't see any movement in the decking.
The pool company that did the plaster will come tomorrow to check the fittings and the light.
Can you all off any advice on:
1. Any other steps I can take to islolate the leak (outside of ripping up concrete - last resort).
2. Since we used two companies and the leak didn't exist prior to the work, holding them accountable for a leak free pool.
Thanks in advance for any advice you may have to offer. I'm attaching a picture to give you a visual aid.
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