Dan Diamond is a White House reporter for The Washington Post. He was previously a national health reporter covering politics, policy and public health. He joined The Post in 2021 after covering ...

Chemical levels should be maintained in the following ranges for a well-balanced saltwater pool: Calcium Hardness: 180-200 ppm Stabilizer level: 50-80 ppm Alkalinity: 70-80 ppm pH: 7.6 The best ...