Source of MagnesiumMagnesium (Mg+2) hardness is usually approximately 33% of the total hardness of a particular water supply. Magnesium is found in many minerals, including dolomite, magnesite, and many types of clay. It is in abundance in sea water where its' concentration is five (5) times the amount of calcium. Magnesium carbonate is seldom a major component of in scale. However, it must be removed along with calcium where soft water is required for boiler make-up, or for process applications.
Treatment of MagnesiumMagnesium may be reduced to less than 1 mg/i with the use of a softener or purification exchanger in hydrogen form. Also see "Hardness".