Does Alkalinity Cause pH To Increase Faster?

[chem geek]

Jim,

For the most extremes in pH, measure the pH just before you add chlorine, presumably at night. Then measure the pH about an hour after you've added the chlorine (with the pump running during that hour). This would be one of the extremes of pH. Another time to measure would be soon after a heavy bather load since that can sometimes lower pH. Another time would be after a rain storm (if it rains in the summer where you live).

Richard