Hey guys outstanding site.Been a subscriber almost a year,just completed 5 acre pond SE of Nashville,TN. Please dont laugh at the question,but is there anything you could do ie.device,mechanism,high volume well,etc.To keep the water temp in the winter months at around 40degrees to allow the threadfin shad to winter thru.Go ahead and laugh but it seems like you guys are having a good time! Steam plant is out of the question