Pond Boss Forums AERATION Should I aerate? Was it the aeration?

wingfan - The bottom aerator will in MOST cases help reduce the chances of winter kill. Winter kill will depend on severity of winter, location of diffuser, species of fish, and organic load on pond bottom. Diffuser operation all winter will cool the pond water to varying degrees below 39 degF which is quite stessful on the fish. A latent death in early spring may occur.