We had a plan.
Chet told me that his water would be ~58°, so I experimented and figured out before I left that 20lbs of ice dropped the temp in my tank by 2°.
I was at 58.5° when I got there. He had warmed up just a touch.
I knew that my pond was 67.8° when I left. It was 71.1° when I got home, and my tank was 69.5°.
It took me two hours to get there, and three to get home with the extra stops for temp checks and minor adjustments.
