Buy the Hovabator, scrap the expensive reptile thermostats, and go to Grainge.com and buy yourself a Penn industrial thermostat. You DO NOT need a proportional thermostat to hatch ball pythons. A simple on/off stat will do the job and has for me for over 20 years. I still have the same Penn thermostat I got from Grainger in 1995 and it is still working as well as it did the day I got it.....for around $40. I've hatched everything from Burms to Balls to Chondros with it. If you convert your Hovabator, you can fit about 50-60 ball python eggs in it. Think simple and don't over-think it.lol.
Is Penn and Johnson the same thing? I can't find anything when searching for Penn thermostats...just comes up with Johnson stuff. Any pics of your hovabator setup?
Lucifer Sam, Siam cat...
Always sitting by your side,
Always by your side...
That cat's something I can't explain...