Love your reef! Great job! I run my Nano as simple as possible as well. I do run an ato, and I haveit on a WiFi timer that only allows it to run at set periods of time throughout the day and for no longer than 1 minute. That way, if the sensor fails, the timer will cut power before it has time to overfill. Other than that, no skimmer or dosing. Just filter floss and water changes.