ChuckTo? be honest you are close to the ballpark and the fact is if you allow it to sit overnight I’ll bet you are right in the strike zone. Chlorine has away of attaching itself to other molecules faster than mo#ts&8230; something I found out the hard way when I burnt my arm last year… In short, recheck the pH 24 to 48 hours later and most likely you will find you are all set.Bruce