Sorry that I can't seem to figure out how to post a photo, since I just want to attache them. I'll try to figure it out and post them.
AS you likely know, keeping cold water temps is survival for trout (below 72), so we used the aerator for two puroposes, #1 aeration and #2 for automated cooling. We studied three previous years of internet weather high / low temps for all days in May through September to look at trends. We found that more than half of the eveing low temps historically drop below 62 degrees. With that data, we installed a Ranco 220 volt thermostat from ACF greenhouse supply
http://www.littlegreenhouse.com/accessory/controls.shtml for $75. This gives us the ability to set the "heat cycle" to turn on the aerator at whatever tmep and off when it rises to another temp. In practice, we used this to turn on the aerator when it reached 62 degrees and off at 65 degrees (later set to 65 during peak summer heat period).
So, it not only aerated, primarily at night, but it cooled the pond exposing the bottom water to the cooler air temps at night.
One time I recall it dropped from 85 in the day to 40 at night and actually cooled the total pond by a full 2 degrees in just one night. We believe this was an essential part of the solution to keeping pond temps within the survival range. Does that answer your question?
