Step 1:
Step 2: (stainless pan from making maple syrup)
Step 3:
Check:
Took about 5 minutes to set up and then about 5 minutes to heat up the ~2 gallons of water from 80F to 100F. That was before I put a towel under the pan to insulate. The heating element is made for heating up a cup of coffee or soup. The instructions for the controller are surprisingly clear and straightforward to operate (I actually watched the video on their ebay auction where they said "we made the instructions really clear" in pretty good English. They convinced me!). There is a temperature offset adjustment so you can calibrate to whatever thermometer you trust (for me it's my beer-making thermometer). Set to heat (vs. cool down), the control temp and accuracy and off you go! The pump is just a fishtank pump that keeps water circulating. Provides for very good, consistent temperatures throughout the water except maybe right near the heating element. I measured < 1/2 degree deviation from where the thermocouple is shown sitting in the water.
All off eBay for $56.29 (that's per set and includes 2 heating elements). Well, the pan was just a food serving pan I had laying around used in Feb/Mar for boiling maple sap down to syrup. I don't remember what that was...maybe $35 but it's practically free since I can't recall for sure! Key requirement was that the controller operates on and supplies 110V AC, so I can just plug in everything without wiring. Perfect!
Next step: E-6!