Thanks for your replies Bob,

Another factor is money. It's hard to justify spending thousands more after having already spent thousands on a pond that isn't holding water. I contacted a local fish farmer and pond contractor who suggested an additional 2' clay liner and of course said theres no guarantee that it will work. Those odds just aren't good enough to justify the additional expense. I have a two year old daughter who will need to go to college some day and the resources would be better invested on her.

Thanks,
Patrick