How many float switches do you use?

[bamf25]

I know most people run an ATO system that employed 2 float switches. In what other applications are people using them and how common and useful are they. I have seen return sump dry float switches, ATO tank float switches, even skimmer full floats. Are there any others, and how much do they really help?

[natedogg]

Its a safe call using two for your ATO. In case the first gets stuck, the second one will turn the pump off.

[Midnightsun]

No less than 6. :eek1:

1 for ato maintain level (switch)

5 for low level alarms. ca, mg, alk, sump, ro/di reservoir

If any go into alarm, my Apex sends me an email.:D