I found out that cuttlefish bone is great for tortoises. But is it possible for my tortoise to have too much cuttlefish bone? After leaving an eight inch cuttlefish bone in his enclosure for about two weeks, my 3 inch russian tortoise finished it. I noticed him passing urates more (2 times a week). He is hydrated and I had already cut off high oxalic acid containing greens. Is that way too much calcium for him? Should I limit his supply of cuttlefish bone and what is the sufficient amount of calcium? Please help