Plastic Thermometer with Suction Cup

An accurate and easy to read glass tube thermometer with a plastic backer. Its suction cup allows the thermometer to be positioned anywhere on the inside tank surface. Has a green safety zone indicator to show the best temperature range for most tropical fish. Each thermometer measures approximately 5-1/2" tall. Range: 0 to 40 degrees Celsius and 30 to 100 degrees Fahrenheit. For fresh or saltwater use.