The alarm notifications do not come from the ATK output program, they come from the EmailAlm programming. The standard ATK Setup task adds this line to your EmailAlm program:
If (upper sensor name) CLOSED Then ON
Under normal circumstances, the water level should not reach the upper sensor. Please read my ATK Tutorial for a detailed description of each line of programming, and how the ATK is designed to work. It also contains a list of troubleshooting steps:
https://www.reef2reef.com/ams/neptu...torials-part-3-automatic-top-off-kit-atk.692/