My CH level has always been in the 280-360 range. All other levels have always been stable and constant. I check weekly for TC and pH and a full TF-100 test bi-weekly. Never had a CH run up ever before. We have had lots of rain here in CA but didn't change test results before. Tested CH twice to confirm the 680ppm.
Should I just relax and keep an eye on it moving forward? Can't help but wonder why such a drastic change all of a sudden when all that has changed was a release of excessive water and my usual pH rise.
plaster, 17500gal, bleach