I would be concerned for another reason. Sliders are very hardy. Even though the conditions would be harsh, it's totally conceivable that they would live just fine. Sliders are notorious for surviving so well that they push out native species and dominate the ecosystem in the area they were introduced. They have really caused problems in a lot of areas where they should not be native.

I would strongly caution you again introducing non-native turtles into the area.
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O.1 Cat "Bella"
1.0 Ball Python "Spanky"
3.0 Red Earred Sliders "Yertle" and "The Twins"
1.0 Husband "John"
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