well about to embark on building a new pond at my new place...bigger and not preformed so this should be interesting. I also have unearthed a oh 10' x 4' about 2 ' deep horseshoe old concrete pond which I will somehow incorporate into the new pond as a sort of backwater part..after I break out at least a 2' section of it to join it when I dig out the new one...this should be fun!!! oh hands here we go again! lol wish me luck!