RO Water Shut off saftey

[smokinreefer]

Damn. I had the exact same thing happen!

Do you use a controller? I am using a Neptune now (first time using a controller).

Thinking will need 2 optical sensors and a solenoid.
Optical sensor 1 will be a low water sensor so it will trigger the solenoid to open and fill the tub until new RO/DI fills to the top and reaches Optical sensor 2 which in turn will trigger the solenoid to close.

Voila.