Quote Originally Posted by Rangeball
I'm wondering if the shock level of TC gave me a false high on PH, and I actually lowered it too much. I did use the chlorine neutralizer before testing PH, but only 1 drop as instructed. Could this be the case?
In addition to the true points about high chlorine levels (>10 ppm) affecting the pH test (it converts phenol red into chlorphenol red which looks dark purple above a pH of around 6.6 so can fool you into thinking you are at dark red alkaline when you are not), a chlorine neutralizer will also usually increase the pH by almost 0.1 per drop).