Watermom, it was 130 ppm as of this past weekend, having risen from 100 on June 2 and 120 on June 5. I think it went up from using powder shocking product (cal hypo?) a couple of times. Can't recall if bleach affects it or not (I've read my manual from Taylor test kit a few times and lots of different posts on here so have digested lots of information but didn't retain lots either, lol).