Dave, are you talking about ESS-13 I not sure exactly what it's called, but I called the company and they said they could stop my leaking by pooring in a solution that would also kill the fish.
They wanted $6,000 for my .62 acre pond. They said it would be cheaper than draining it and packing with clay.
I told them that I didn't know what part of the country they were from but I could most deffinitly redo my pond for half that cost probably even 1/3 that cost.
