It takes two hours to heat a 40cm fish tank with a 50 watt heater. The heater is used to heat the water in the fish tank and has an automatic temperature control function. It can stabilize the temperature near the set value, which is the foundation for the stable water temperature in the fish tank and the prerequisite for the healthy growth of fish. A 40cm fish tank is not large, and a 50 watt heater can reach the set temperature after heating for two hours. Of course, it is related to the temperature and may have errors.

Precautions for heating fish tanks

The working principle of a heating rod is that it is induced by a hot spot. When it increases the surrounding water temperature to the set temperature, it stops working and the indicator light goes out.

After the water temperature has circulated and the surrounding temperature drops, if it continues to turn on, the indicator light will light up, which leads to many fish enthusiasts mistakenly thinking that it is broken. Moreover, for a typical 1-2 meter fish tank, it takes at least 24 hours to rise to 30 degrees Celsius. I forgot the exact time, but the reverse is very slow.