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).
The Â£10m donation is the largest single gift that J K Rowling has ever given. Her mother, who had MS, died when Miss Rowling was just 25. She has donated Â£10million for research at a multiple sclerosis centre which will be named in honour of Anne, who died in 1990. Miss Rowling, who never told her mother that she had started the book, has said she is haunted by the death, describing it as 'a literal pain in my heart'.