Has anyone else tried using a cheap STC-1000 thermostatic controller to switch on (and off) the cookie tin heater?
I just made this setup to give it a try. I set the temp initially to 2 degrees C but the top skinned over, so I bumped it up to 5 degrees C and last night it was minus 8 degrees C and no ice.
I also replaced the single bulb with a double bulb in case one blew. I figured that with a thermostat the power consumption would be less anyway. I read in the instructions that there is an alarm if it fails which I'm hoping means that if both bulbs blow and the water goes below 5 degrees C the alarm will sound.... Hope so anyway.
Here's the finished setup pic from the blog...
and the initially confusing wiring diagram converted into 'real life' :-)
Hope that's food for thought for anyone else making this type of heater.
Cheers and Merry Christmas!
p.s. (although I'm really hankering after a plastic water carrier type with nipples and an aquarium heater and have just ordered a heater off ebay lol)