Originally Posted By: Kendal Miller
Hey Everyone,
I’m working on building a 1 acre swimming pond we are in an area with heavy clay so we are doing a natural bottom with no problems there.

I want to and sand to the bottom to help keep the water clear and make it nicer for swimming. I have read that the sand will just disappear into the clay. I was considering just putting down a heavy visqueen sheeting between the clay and sand to help provide support for the sand. Any thoughts or ideas on how to do this better?


The sand will slide off the plastic into the depths unless it is turned up at the bottom to form a barrier. At any rate, the sand will become mixed with clay anyway unless your pond stays perfectly clear. Any stirring of the bottom clay will allow some clay to settle on the sand. A floating dock is better, so that the bottom is not disturbed. Lots of undesirable things are trapped in bottom muck, so best not to stir it up.