I have a windmill aerator but would agree that a simple solar setup would work better. I have a 100 watt solar system I put together that delivers air more often and more consistently. I am building a second system that is 200 watts to put in place this spring. I have a handful of the components on hand so my costs are low. For what a windmill costs you could make a much better solar system.

Now if you have trout that live in your Pond year round already I would hesitate to aerate as you might make the deep water too warm.

Do you have trout living year round in your Pond without fish kills?