Okay, chemistry experts.
As most of you know, I've been draining and refilling my pool to lower the CH.
Prior to the last storm, I was at
Yesterday, after dropping the level and letting things mix a while, I was at
Today, I vacuumed and decided to check again, just because I'm afflicted
Is this possible? My intention is to lower CH and dissolve the scale from the walls, and it's been working. But I've never had CH climb that fast. What I want to know is if that kind of increase is possible, or could I have not let the water mix long enough after adding 10% or so rainwater? I am ruling out testing error, because I've been using the kit and the speedstir for months.