I've got a 50 year old plaster pool that appears to be leaking. With the pump off, water loss is negligible over 24 hours. With the pump on and one skimmer plugged, it looks like it's lost a little over an inch in 12 hours if I've got that right. There is no visible water in the pump house at the pump or filter. Can I conclude that the leak is in the plumbing between the skimmer I hadn't plugged and the pump?
Presumably the next steps are to call a pool company to confirm and repair? Deck is concrete. pump and filter are on a separate concrete pad in a shed.
thanks for any assistance you can offer.