Zoo Med Digital Aquatic Turtle Thermometer is a waterproof, completely submersible, digital thermometer that is easy to read. Aquatic turtles are required to be in 70-80 degrees Fahrenheit water as their safe zone. Maintaining proper temperature will allow your pet to properly digest and metabolize food, and facilitate shedding (molting). Zoo Med Digital Aquatic Turtle Thermometer has a suction cup that helps secure it to the glass surface with the digital readout facing forward in the tank for easy reading. Ideal for fresh and saltwater aquariums. Spare battery included.