I have a tetra heater that is auto set to 78. I'd like to set up apex as a redundancy if it every stays in the on position for Apex to shut it off after 82. This is how I have it setup in apex but when I set it to auto the heater says it's off and the temp will get down below 76 without it turning on. What am I doing wrong?
Apex Heater.PNG
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