What do you monitor/control with your reef-pi/Robo-Tank?

[TCoach]

Ok, I've decided I'm going to be ordering a Robo-Tank 2.0 controller when @robsworld78 releases them. As I get serious about this, I was wondering what you monitor/control with your reef-pi setup.

I'm thinking the following:
Direct equipment power control (I already have 2 Kasa HS300 strips) - Things I don't want to risk a Wifi failure causing issue:
* Main return pump
* Heater controller/Heater
* ATO
* Sump Fan (cool if temp too high)

Sensors:
* Sump pH
* Sump Temp
* Tank Temp
* ATO level x3 (Emergency low, Low, High)
* Sump level x 3 (Emergency low, Low, High)
* Overflow x 2 (Emergency Low, Emergency High)

Other control/sensors in the future:
* CO2 monitor
* Humidity monitor
* Jebao wavemakers
* Lights (maybe, current PopBloom lights not wired for control)

What else do you monitor/control? What do you consider to be the most important?

 

[Ranjib]

I control light (kessil), temperature, ATO, all equipment, dosing (persistaltic pump on timers), pH monitoring and a bunch of various macros for ancillary function (water change, feeding, photography, saltwater mixing etc) across 3 reef tanks and a salt water mixing station (WIP)

sincerely
ranjib