Can red eared slider turtles live in a big pond in the winter in PA. They are 10 years old and they have never been outside year round yet?

Red-eared slider turtles can survive in a pond during winter in Pennsylvania, but there are important considerations. They hibernate in colder temperatures, but since your turtles have never been outdoors year-round, they might not be acclimated to the temperature fluctuations and potential hazards of the pond environment. It's crucial to ensure the pond has a suitable depth for hibernation and that it doesn't completely freeze over. Additionally, providing a proper basking area and monitoring water quality is essential for their health.