ohio scott, that sounds exactly like what I am going to do. How much do you think you spend per year in materials/electric?

I have increased the size of the pond to 225' long and about 85' wide. Also decided to go 14' deep to keep the pond from turning over too often. It should work out pretty well for my set up.

My watershed will only be about 3 acres

We get about 35 inches of rain annually here in Southern Indiana.