The Marina floating thermometer is accurate and easy to read. It has a safety zone indicator for most tropical fish. Protect your fish from unsafe temperatures by monitoring aquarium water with this reliable thermometer. It is ideal for fresh or saltwater aquariums. Floating glass thermometer 20-100F· Centigrade and Fahrenheit · For fresh and salt water · Accurate and easy to read · Safety zone indicator for most tropical fish · Protects fish from unsafe temperatures
