For a 1 m 2 fish tank, if there is a good filtration device in the tank, it is no problem to change the water once a month. If the filtration system is normal or there is no filtration, the water should be changed every 5-7 days. Of course, the specific water change cycle depends on many factors, such as the density of fish, the quality of water and so on, once the fish tank is found to be turbid, it is necessary to change water in time.
1. Trapped water: It is generally necessary to use trapped water to change the water in the fish tank. The method of trapping water is very simple. 1-2 days before preparing for changing the water, connect the tap water to the basin and put it under the sun to dry. The chlorine in the water can be discharged after drying for a few days, thus providing a safer growing environment.
2. Water temperature: Pay attention to the water temperature when changing the water. The temperature of the new water and the old water should not be too different. Otherwise, the change of the water temperature will make the fish feel uncomfortable. Usually trapped water temperature is relatively low, if you want to raise the water temperature, you need to add a little hot water, and then feel the water temperature, feel almost changed.
3. Water exchange: It is not allowed to exchange water by violence. If the new water is directly poured into the fish tank, the water temperature and water quality will fluctuate. Usually, new water is slowly poured into the fish tank from the tank wall, so that the water enters little by little, which will not have a great impact on the water quality, and the temperature difference will not be very large.
