I am pretty sure that I have a leak in my 43' X 21' AG pool. Not a huge leak, but about 1/2" a day. Of course on a pool of this size that is quite a bit of water. I am looking for the best ways to find and repair the leak and welcome any ideas. The pool is surrounded by a deck on about 75-80%, much of which cannot access the walls of the pool. I have recently replaced the filter and much of the plumbing, but I can tell that the leak is not in the plumbing. There are a couple very small drip leaks that I intend to fix in the off season, but these are way too small for this type of water loss.