Posted: Sun Mar 04, 2012 7:52 pm Re: Hard Water?
Welcome!
I'm guessing that the picture is of a partially dry shell?
I'm no expert in the shell department, but as you await an answer from someone more informed, you can start with a Betadine soak and a soft bristle toothbrush. It can't hurt anything.
"I know up on the top you are seeing great sights, but down at the bottom we, too, should have rights"
~ "Yertle the Turtle and Other Stories" by Dr. Seuss ~