For easily reading the temperature on any aquarium. Temperature is displayed in both Fahrenheit and Celsuis.
A green box will appear around the correct temperature, or if there is no green box, the temperature will be inbetween the blue and brown box (If the blue box says 21 and the brown box says 22, the temperature will be 21.5)
LCD Thermometers are adhesive and stick easily to the aquarium glass and will usually stay in place for years!
If you have any questions, please don't hesitate to ask!