after one day, and one small calibration, the heater is holding temp at 28.3 C like a champ. Did a cool water wc dropping the temp down to 26.8 C and the heater brought it right back up to 28.3 C and held as well.
-Rick
Rick how do u calibrate this heater or any other heaters?
I ordered 8 of the temp controller. And about to order 15 of the 300w heater.