Common organic causes include scale, algae, âpink slime,â white water mold and vinyl liner mold. The Langelier Saturation Index measures the corrosiveness and neutrality, or scaling ability, of water. Water, by nature, âwantsâ to be neutral or balanced.
Joanna J. K. Rowling is 51 years old (birthdate: July 31, 1965). Joanna J. K. Rowling is 51 years old (birthdate: July 31, 1965).
She has three children. Her eldest is a daughter, Jessica, by her first marriage to Portuguese journalist Jorge Arantes. Jessica is now about 21 years old. Rowling and her first husband divorced while Jessica was still a baby, and Rowling left Portugal and brought her daughter back to the UK.