At a new plaster pool startup, are there service techs that have tested the tap water (that was used to fill the pool) and compared those readings with the water in the pool after it has been filled? If so, what differences (or changes) have been noted in the pH, alkalinity, and calcium hardness? What differences has been noted if the tap water was soft and aggressive versus balanced or hard tap water?
Also, has anyone experienced a significance difference in the calcium level changing during the first month or two? We (onBalance) would like to get some feedback from service techs on pool chemistry startups.