How to keep the water in a fish tank at a constant temperature

Speaking of heating rods, fish farming enthusiasts should all know that they should be placed in the fish tank to ensure the temperature of the water so that the fish can live in an appropriate temperature range. How to keep the water temperature at a suitable temperature requires that the heating rod can be maintained at a constant temperature, and the bimetal thermostat is indispensable to achieve this effect. Today we will learn how the bimetal thermostat controls the temperature of the heating rod.

The heating rod should function to keep the temperature of the aquarium water constant. Once the temperature of the heating rod cannot be kept within a constant range, then the fish will be in great danger. The heating rod with integrated thermostat switch is more common in the market now. Its working principle is very simple: a thermostat switch is placed inside the heating rod. It mainly uses the principle of different expansion coefficients of bimetallic sheets to operate according to temperature changes. When you set a temperature, it will automatically sense the temperature. When the water temperature in your fish tank is lower than the set temperature, it will start heating. When the water temperature is higher than a certain temperature, it will stop heating.

We should choose a thermostat with a close difference between the trip temperature and the return temperature. Generally, the temperature control range is 20~30°C. Since the bimetal thermostat switch does not directly contact the water, so it should be selected according to the actual situation to prevent the temperature from being inaccurate.

The VA1 thermostat is suitable for low-voltage electricity, and the temperature difference is about 5°C, which can effectively control the water temperature of the fish tank.