Quote Originally Posted by jontelling View Post
I like the idea (the surface tension issue has been bothering me) but I feel once the water gets from the top tank to the bottom it will have lost most of it's heat.
Maybe a beer warming matt or even a USB cup warmer?

I really don't think there would be much heat loss there. We are using nylon tubing normally, which has a low thermal conductivity and fairly fast flow rates. I do agree that finding a way to heat the build tank would be much better, just looking for the simple, quick and cheap fix here.