Something interesting about RKL ...

[Europhyllia]

Don't you have to set an "off" into the programming as well as an "on" ??

I have it set as
on when: BELOW (other option would be ABOVE)
set point: 7.8
That's how the RKL gets programmed. There's no on/off. It's on when the pH the probe measures drops below the set point (and should go off when it goes above)
Sounds like an aqualifter thing then if it does the same thing on the Aquacontroller.