I am working out the details wrt an aeration system and have stayed away from having air lines traveling up hill then back down to the pond. I had the same idea of putting the pump over the dam to reduce the noise, but have decided to put it up hill from the pond so that the air line/s always run down hill to the fusers. I don't know how big of a problem condensation in the lines can be and I don't want to find out.

My 2 cents.


Fish on!,
Noel