The Marina Floating Thermometer is the perfect way to make sure the water temperature in your aquarium is just right for all your fish friends! The thermometer is easy to read and has a safety zone indicator for most tropical fish, so you know that temperature is just right for your fish, The Marina Floating Thermometer is equipped with suction cups so it will stay stuck on your aquarium at all times, The Marina Floating Thermometer Features and Benefits:, - Easy to read, - Includes a safety zone indicator, - Equipped with suction cups, - Temperature range of 30 degrees to 120 degrees farenheit, - Easy to install, 4, 25"" length SKU: RCHG0058