We just bought a new aerator this year. It's an Aquascape ProAir 20. A real bubbling fool. But we don't generally run it - I just move it so it's where I need it in case we have to turn it on. I also have a de-icer that I put in place in case we need it. Both would only be necessary if we had to turn the pond off for some reason - like a pump or plumbing failure.Thank you. What size aerator do you use. And when you say you run the pond year rou d does it not ice over? Are you in a warmer climate?
Warmer climate? No! We live near Chicago. And yes, the pond freezes over, but the waterfall keeps the water moving under the ice and we get some spectacular ice formations as a result.
December 2017 and January 2018 - cold and snowy pond!