It is the name of a prominent Christian saint, Saint Jerome, the translator of the Vulgate.Jerome ranked among the top 200 names given to boys born in the United States between 1903 and 1985. It has since declined in popularity and was ranked as the 616th most popular name for American boys born in 2008.t is the name of a prominent Christian saint, Saint Jerome, the translator of the Vulgate.
Expected Levels. Total hardness in freshwater is usually in the range of 15 to 375 mg/L as CaCO3. Calcium. hardness in freshwater is in the range of 10 to 250 mg/L, often double that of magnesium. hardness (5 to 125 mg/L). Typical seawater has calcium hardness of 1000 mg/L, magnesium.
Calcium hardness is a term that measures that amount of dissolved minerals in your swimming pool water. These minerals not only include calcium but magnesium and sodium as well. In the event the calcium hardness is too high, there's a simple way to lower it by partially draining your swimming pool by using your filter. Pool supply stores have chemicals that help soften the water but can be costly and at times ineffective.