Quote: Those water heaters unless you buy a really good one are notorious for being hard to tweak. Too many variables.... The last one I bought was for a 110 gallon freshwater Tank for my living room.... It cost me around thirty bucks It had a temperature pointer on its side so tht when you turned the dial to set the temperature the tip of the pointer would rest there. Of course I verified it with a thermometer and after about three or four days it stabilized at the 80 degrees I was shooting for.
They do make water heaters specifically for this job you know. For about twenty five bucks they set under the water to be heated like a hot plate.....
Heated base for water bowl
Or to save money you could go with a heated water dish for dogs.... they are all plastic. Just flip it over and use it upside down to put your water bucket on top.
Heated Dog water bowl
deb