The Pisces Floating Pond Thermometer is a great way to monitor the temperature of your water. Feeding your fish the wrong type of food when the water conditions change can effect their health as their metabolism is unable to cope. Trying to monitor when to change from one type of food to another is made easy with the Pisces Floating Pond Thermometer. The Thermometer floats on the surface of the water and allows you to accurately monitor the current temperature by way of the clear gauge at the front. The water can be monitored from -6°C to 50°C (21°F- 120°F) The thermometer can be used free-floating or can be anchored down to a weight by using the cord attached at the bottom of the thermometer. The Pond thermometer can also be used to gauge the water temperature in Swimming Pools, Spas, Hot Tubs or any large bodies of water. Specifications Range: -6°C (21°F) to 50°C (120°F) *only display Celsius Dimensions: 185mm x 50mm Colour: Blue