I'm no aerator expert. Advertizers on Pond Boss Mag. have systems. You are going to spend probably $800 or more for a good one but it will be worth every cent. You need one that is placed at the bottom of the deepest parts of your pond and to stir that whole column of water. I have 2 in my pond feed by a double pump and my pond is about 1 1/2 acres. I would contact the manufactures or hopefully some of our other buddies can offer more info.