Can you change the water in the fish tank without turning on the heating rod in this weather?

We are all using constant temperature heating rods now. Select a temperature. If the room temperature is higher than the temperature in the fish tank, the heating rod will basically not work! However, if the temperature drops suddenly, especially at night, if the heating rod is not turned on, the water temperature in the fish tank will also drop with it, which is too fast. When the temperature difference is large, it will cause harm to the fish and it is easy to get sick! In addition, when changing water, the temperature of the trapped water is two degrees higher than that of the water in the cylinder. Don't pour water directly on the fish. This answer comes from the top of the parrot fish in Baidu Post Bar. If you have any questions, please pay attention to this bar. Many fish lovers will discuss various issues with you.