Aquarium Thermometer Digital Fish for Tank Thermometers with Suction Cup -30-50℃ Temperature Rang Fish Tank Thermo-Meter Digital Heater Water for Top Gallon Aquariums Chiller

range: -30 ~ 50 ℃;-20-120℉

just it in the for tank and attached the suction cup to the inside of the for tank for easy and accurate reading

Being that this thermo-meter is inside the for tank, it gives a much accurate reading of the water temperature than those placed on the outside

It floats and is secured by a included suction cup

Clear and easy to read scale that tells you, unmistakably what the temperature is in BOTH Celsius and degrees