Hey everyone, recently I noticed a white spot on my turtle's shell and was wondering what it might be. My biggest fear is that it may be shell rot but I am not sure. The pictures were taken yesterday but today I scraped a bit of shell off and saw some more white stuff. The white stuff is hard and does not come off, I can see a bit of pink in there as well. I have had the turtle (a red eared slider) for 14 years, he has a heat lamp, filter and all the other things a turtle needs. He is acting and eating normal and the rest of his shell is fine...no red on the underside. His eyes are also clear and ok. Please help and thanks in advance.

