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).
Joanne Jo Rowling, OBE, FRSL (/ËroÊlÉªÅ/; born 31 July 1965), pen names J. K. Rowling and Robert Galbraith, is a British novelist, screenwriter and film producer best known as the author of the Harry Potter fantasy series.