Well I see one major problem. When I was building the pond and getting ready to use our sheeps foot to compact it my dad stopped me. He said there was no need to compact it that the water would do it over time. I didn't argue because it's his land, equipment and fuel. There was not any real loose areas but it was wheel rolled at best, not properly compacted. Will if ever seal on its own?
I also continue to see bubbles coming up in the same general area of the pond and I think that is where my leak is. Does that sound right?
Thanks for all the great information Bill.