Well, My pond is losing 1"-2" a day so I ordered the polymer pond sealer. Should be here next week. Ordered enough to seal the entire 3/4 of an acre. She also threw in a couple flock tablets for me to try. I will keep you posted on the results. If this works as claimed this could be a powerful tool for you pond builders. It was $16,000 cheaper than ess-13 and $7000 cheaper than polymer innovations.

"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery."
Winston Churchill