I used this method at one time and it works. I used one of the laundry type sinks with an acquariam heater to hold the water bath at the proper temp.
Originally Posted by harveyje
I now have a stainless steel sink that I salvaged somewhere years ago into which I have cartridge type heaters installed in a sump controlled by a solid state controller that does the same thing that harveyje's method does.
I bet his method cost less and works just as well. Did someone say something about reinventing the wheel?