I got my C1900 online today. Ph read as nearly 9...I thought, that's got to be wrong, my ColorQ Pro7 test kit says it's 7.3 (been there for weeks). Gotta be a bum sensor - I expected to calibrate it, but not that much. So I tried a test kit my PB gave me. Color matching test..I hate them, I don't have great color gradient recognition. It read high as well, off the chart. Then went to the pool store. Made them test it twice. Assuming they are correct and my colorQ is wrong, my pool is pretty messed up. pH, hardness are way off. FC is also much higher than I want it (which also explains why I have had so much trouble with chlorine levels as I read them with the ColorQ)...ug. Learning something new every day.
(just ordered a TF100 with a stirrer)
Probe Bowl...technical term :
Enclosure to protect from sun and rain:
How it shows up on Aqualink: