Oh, I'm all for that. Adding electronics and pH probes to something that just freaking works, is foolish. Set the bubble rate, set the flow...done. I do have a solenoid on my co2 tank plugged into the wall. The reason is if power is lost, the co2 will shut off. Worst case, itdoesn't, which is the same as having no solenoid. I did get fancy and use a kamoer fx-stp to feed mine. Using crushed coral, I do have a ph probe in the reactor to be sure I don't go too low.
Idea being, let the reactor do its thing, but have redundancy.
I don't even trust ATOs. I use a kamoer fx-stp to dose kalk 24/7 at a set rate that replaces evaporation.
No reason to live in the dark ages while still maintaining old school mechanical reliability. Yes, I use halides and ozone too.