In my opinion, if it was leaking from cracks in the pool shell, it would be obvious.
In my opinion, the leak is probably in the air line.
I would recommend a pressure test that does the air and water line at the same time.
I think that you will be able to hear air bubbles escaping from the leak if you listen to the concrete at the spa.
In my opinion, the leak is probably in the air line.
I would recommend a pressure test that does the air and water line at the same time.
I think that you will be able to hear air bubbles escaping from the leak if you listen to the concrete at the spa.