please update any success with either the db-100 or db-200. have pond in ga--leaked--we drained and packed bottom with 2 ft of clay--still leaks--apparently coming thru dam --- any way to solve this without putting a new core in the dam would be wonderful. have thrown away too many bucks on this 2 acre hole already. frustrated beyond belief as it sits directly behind my house. i plan on calling the tenn. pond doctors to see what they recommend---i do feel whatever i do should tie into the 2 ft clay bottom i already invested in. please post any successes with this method as well as others. thanks ga pond rookie.