During the hot part of the year I run the air pump from midnight to 7:00am. When September gets here I start shifting
the run time to daylight hours. I'm running 2:00am-9:00am now. I'll move it an hour per week until it's only running
during daylight hours, then move the diffuser up shallow around the end of October and run it 24/7 all winter.
I get the part about aerating only at night during the summer. There is no photosynthesis at night, and you don't want to mix in hot surface water by aerating during the day.
However, I don't quite understand aerating only during daylight hours during Autumn (and Spring I assume). Is it to maintain warmth in the pond by mixing in warmer surface water? Can you explain?
