I will keep anyone interested up to date on my attempt to seal my leak. Wednsday 2-22 the pond builder stopped by to apply the powder like bentonite to the area he feels it is leaking. He figured it to be about a 25ft square area. We spread out 250lbs in the surrounding area. The water in this spot is only 3-4ft deep and is the end of a small inlet creek arm feeding the pond. My leak is about 1/4" a day and that is with a feeder creek supplying about the same 1/4" a day. How can I post pictures of the pond? I Will update this every other day or so.