We need to make a pvc repair on one of our cold tub units. It's an acrylic tub that's easily turned on its side to check underneath for where moisture/leak is. If a piece of pvc is cracked it’s as simple as replacing it. The best way to diagnose it is to put it on a work table (or two), turn it on

with 6” of water in it, and see the leak. Usually simple, straight forward repair. We will pay your fee.