Cuttlebone backing.
Okay so 1 week ago I bought a cuttlebone and put it in the tank. The person at the pet store knew it was for my turtle and did not say anything about the backing. I put it in and he has been biting at it for a week with the backing on. I read that it is indigestible. Is that very bad for her now. She didn't get that much down, but I am scared now since I read it was bad.