I'm not nearly as knowledgable as some of the great aeration experts on this forum, but I'd be a little cautious about running an aerator for trout just at night. I've managed one trout pond this way and we found that a cloud of debris and black colored water would be lifted off the bottom for an hour or two after the aerator fired up. This seemed to be stressful on the trout, however I was not priveleged to follow up long term on the project. What I do on my best pond is run a surface agitator that is 1/2 hp just at night. That way I get the benefit of improved O2 to counter nighttime plant respiration, without disturbing the thermocline or pulling cruddy water off the bottom. I took careful O2 measurements all summer long and had an exceptional O2 profile that allowed my yellow perch to survive the entire summer. Of course trout are a little different animal..... ;\)


Holding a redear sunfish is like running with scissors.