We have a pool that has been maintained by a company for some time, but we have reason to believe that they do a sloppy job. I would like to the maintenance myself from now if possible. The pool is equipped with a AquaRite Pro SWG with a Sense & Dispense ORP/pH controller.
I just checked some readings on the AquaRite, and then did some manual testing with strips (2 different brands) and they don't match up at all. Does this mean the AquaRite or ORP controller is badly calibrated?
Aquarite readings on-screen:
Salt level: 3,6g/L=3600ppm (which according to the AquaRite manual should be between 2,8 and 3,4g/L)
-24,02V -6,77A (I understand that this is a measure of chlorine production, driven by the measured ORP)
27degrees Celcius (80 degrees Fahrenheit)
Manual testing with strips (I used 2 different brands which gave more or less the same results)
It's these FC, TC and CYA values that make me wonder if the AquaRite is badly calibrated?