Pond Boss Forums POND CONSTRUCTION Renovating a Pond or Lake? Pittsburgh EM need for Pond Reno

I agree with Dave 100% - repack with clay and sheepsfoot - it's tried an true method for sealing ponds. These chemical treatments are still in their relative infancy, are pricey, and until I meet someone on the forum who can document their experiences [positive or negative] I am reluctant to advise anyone to experiment. If the cost were lower, would be easier to justify trying. While the websites for these companies cite successes, I would feel far more confident if one of us [PBF members] could document their experience. I have a small pond I might be able to try an experiment with in the spring and could report back.