Heater help needed

[scrappy35]

I upgraded my tank and changed things around on my apex outlets. I want to use the heater controller to control the heater and the apex just to shut it off if the temp gets to high. Before the outlet was always on. Now for some reason it keeps shutting off. I have on at 76.5 and off at 79.5. Heater is set at 77. Keeps tank 77-78. Can’t figure out why the outlet won’t stay on.
It’s late and I’m tired from the swap, so I took the outlet out of auto and switched on for the night.

 

[scrappy35]

Figured it out, finally found a post. I had on temp set to low.