Marina - Floating Thermometer - Celsius and Fahrenheit

With water temperature being such a critical factor for the well-being of fish, it?s important to have a good thermometer. This Marina Floating Thermometer is designed to float in the water in a vertical position. Accurate and easy to read, it provides temperature readings in Centigrade and Fahrenheit. It also has a safety zone temperature range indicator for most tropical fish. For fresh or saltwater aquariums.