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Zoo Med TurtleTherm Automatic Preset Aquatic Turtle Heater$69.95
Automatic preset water heater. Safe: The TurtleTherm automatically turns off when removed from the water. Pre-set: Simply attach it to the inner wall of your tortoise tank and plug it in.
The TurtleTherm will heat the water to 26 °C (or 78 °F). Power 100 W. Suitable for aquariums up to 113 liters.