Pond water temperature is an important factor that influences the overall condition of your pond as well as the health of your fish. The Laguna Floating Thermometer is a fast and convenient way to keep you informed about the water temperature. The thermometer includes an easy viewing window with large temperature indications for quick readings. It comes with a handy anchoring cord and is designed to float on the water surface for easy access. It records temperatures between 30 to 120 °F (0 to 50 °C). Its light, all-plastic construction is fish friendly and will not rust.