I've never seen water heated this way, so kudos for the originality! Good pictures as well for someone that wants to replicate it themselves. No icing at 25F is impressive, but I hope you'll update when you can test it at lower temps.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.

http://www.youtube.com/@GoldShawFarm