Auto top-off failsafe

[mr_alberta]

You need a solenoid hooked up to a float valve (or two). That's what I used to use. Worked like a charm. I picked up the solenoid back in the day online from McMaster-Carr, but, sadly, they have since stopped shipping to Canada.

[kfowler]

Do you know where I could pick up a similar setup to what you used?

I saw this online, which would work I think depending on how sensitive the strip sensor was.

http://www.camarillowaterstore.com/item140170.ctlg