Although most species of fish need very little attention, they still have some requirements about the environmental surroundings. One of those things is the temperature of the water inside the tank.
For example, tropical fish require temperatures around 75-80 degrees F. In the winter, you will need a heater to adjust the temperature.
But it is not enough because the heater readouts are not always accurate. This is the reason why you need the best aquarium thermometer.
#1 Range temperature
Fish are cold blood animal, they can not adjust their body temperature by themselves. So that a thermometer you are planning to buy has to read even extreme temperature that maybe some types of fish are required.
The larger the range of thermometer is, the better. You should look for a range from 50 degrees F to 104 degrees F.
There are many types of best aquarium thermometers that are available out there. It is important that you should choose the one easy to set up and easy for you to read the temperature anyway.
#1 Stick on thermometer
As the name suggests, you can use it by stuck in the outer of the tank wall, on the side or in front of your tank. It is easy to read, inexpensive and safe but not very accurate.
#2 Standing or floating aquarium thermometer
This thermometer is in direct contact with water. It can be sick to the bottom, float on top, hang on the side and very accurate. But it gets a little hard to read and prone to breaking.
#3 Digital aquarium thermometer
There are two parts of this device. The probe sick in the water and the display stick outside. It is a high degree of accuracy and usually comes with an extra feature. However, this device is quite expensive and requires batteries and power.