When digging the pond he hit a rock ledge that runs the length of the pond and says it is running underneath the rock. I don't buy that explanation.It seems like he does not want to deal with it. I guess I need to get some red dye first and find out where the leak really is before I point fingers. That means I'll have to drain the pond down to 2 ft to get close to the drain pipe, but at least I will be able to see where the dye is going.