Pond Boss Forums AERATION Systems questions Windmill or Electric?

You should be able to prevent supercooling by putting the diffuser/airstone in shallow water or shutting off the airflow. With a Windmill, put a "T" in the line and just let it bleed off freely.

The plus side of a 450' ditch is you won't dig it by hand. The 60 footer, you might be crazy enough to do it yourself with an idiot stick (I was!).