i noticed that whenever i got my first turtle (the bigger one in the picture)... his shell was a bit curled at the edges. My friend told me this was because of some vitamin deficiency in the turtle, but i dont see how this is possible because i feed my turtles a variety of foods and i take them in the sun almost everyday whenever it's warm outside, and they have a uvb light in their tank when i cant take them outside! i also feed them pieces of calcium to help their shell. my second turtle never developed this curling of the edge of the shell, it has just been my first turtle. please tell me what kind of deficiency this is... if it is a deficiency, and how i can treat it or fix it? thanks in advance for any responses...

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~ Evie 
Pets:
German Shephard {Dusty}
German Shephard/Collie mix {Shadoe}
2 RES turtles {Booger and Snot}
African Clawed Frog {Bingo}
Snail {Gary}


