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).
Early Struggles. Joanne Rowling, best known as J.K. Rowling, was born on July 31, 1965, in Yate, England. She adopted her pen name, J.K., incorporating her grandmother's name, Kathleen, for the latter initial (Rowling does not have a middle name).