Thanks for the diversion Steve_! Back to your regularly scheduled program...
No problem! It's interesting to see the numbers, but if you're comparing what it takes to cool air against what it takes to cool water, I think the numbers would be slightly off. It does take more energy to cool the water, but it also holds temperature better than air.
Side question, do you have any trees or shade around your pond, or does it get direct sunlight most of the day?
