...for calcium reactor pH control to be on unless pH drops to 6.3 (this may change, just using as a safety precaution/ temp fallback)
So (PH1 =reactor pH ) (outlet #= whichever outlet has been assigned for pH control)
if PH 1 <6.3 Outlet# OFF
If PH1 >6.4 Outlet # ON
During tuning you...