Jim,
Run the system. It will help cleanse your water. It won't affect the temperature in a negative way in east Texas.
T. shad, and tilapia, will die in winter. If you have T. mossambica, they go at 52 degrees, while threadfins bite it at 42. So, aerating won't save these fish, if you have a "normal" winter.
So, aeration continues its job of cleansing your water and surrounding environment.


Teach a man to grow fish...
He can teach to catch fish...