I read where you live in Kentucky-you should have the perfect weather to kept your turtles outdoors. It is much easier to breed them that way too, afterall that is what turtles do when they are free to be turtles. Indoor turtles are often stressed out and don't dig their nest properly, or even eat the eggs! If you have a choice please pick to keep them outsside. They will be happier and very safe if you build them a proper pen. I have very large outdoor pens where the turtles stay in during the day. At night I move them into smaller, enclosed pens with tops so raccoons cannot get to them. They are very used to the move back and forth and show no signs of stress in either pens.
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Tess
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