Grains for each gallon is how your water hardness is calculated. You will see the abbreviation for this (GPG) in relation to the maximum hardness elimination range for every water softener. The higher the GPG, the higher the grain capacity you will want. Along with the hose securely in place, https://sewer-video-inspection00876.therainblog.com/29002855/the-commercial-plumbing-diaries