Pond Boss Forums POND CONSTRUCTION Selecting a site Site problem

jnapier - I'm not sure I made myself clear in the 25 Sept post. Keeping the soil moist not only applies to chemical application during construction and filling but even AFTER the pond is full. Water fluctuation ANY time will cause cracking of the exposed banks and the thin seal will be lost above the low water point. Chemical sealer companies assume you will keep the pond brimming full and usually don't open that can of worms of drought conditions then refilling. The evaporation, then cracking and resultant leaking when refilled was the problem in the pond where I used the chemcial sealers.