In November 2020 I added an inkbird heater controller. I figured my luck of 20+ years without a catastrophic heater failure was about to run out so I should do something about it! I don't have any other means of controlling the tank and currently the tank sits rock steady around 76.5 degrees as I have the 2 heaters set for 78 and the inkbird set to 75.5 on and 76.5 off I believe...