But there is some hard science. There is a SAE value for aerators. This is a measurement is pounds of oxygen per horsepower per hour of operation. The Standard Aeration Efficiency (SAE) is approximately 4.1 on the paddlewheel models from AES.

Kasco surface aerators have SAE values of 2.6-3.2

Kasco fountains have SAE values of 1.5-2.5

But bottom diffused air systems? Any SAE value? I don't see any posted.

Add to this, the fact that paddlewheels create a good amount of current. I struggle to swim against the current of my 2hp units. They displace a great deal of water.


p.s. I stand corrected. Kasco reports diffused air SAE as 1.0-4.0. From my experience, I expect it it to be towards the low end of that range, and dependent on lots of factors.

Last edited by overtonfisheries; 08/12/20 03:18 PM.

It's ALL about the fish!