to change the water in the fish tank is to change the water once every seven days. If the water is changed too frequently, the fish will be stimulated by the new water, which will cause stress reactions and even cause diseases. If the water change cycle is too long, the water quality is easy to deteriorate, and the ammonia nitrogen content in the water body increases, which has a certain toxic effect on fish. However, the specific water change time is not fixed, according to the maintenance of water quality, there are still differences between large and small fish tanks, which need to be adjusted appropriately.
for the fish tank 1, trapped water in advance: to change the water for the fish tank, first of all, trapped water in advance. The method of trapped water is very simple, that is, to connect the water and put it in a sunny place, to volatilize the residual chlorine in the water by receiving light, and to precipitate some impurities. It usually takes one day in summer, two days in spring and autumn, and more than three days in winter.
2. How to change the water: Before changing the water in the fish tank, you need to find a pipe, connect one end to the bottom of the fish tank, and put the other end lower than the bottom of the tank, so that you can suck the water out of the bottom of the tank. In addition, water can also be pumped directly. After the water is pumped, the trapped new water is slowly added from the wall of the tank, so that the water quality will not fluctuate.
3. Precautions: Do not change the water violently, and pay attention to the water temperature. It is better to keep the same temperature between the new water and the old water, and the difference should not exceed 2 degrees Celsius. If the temperature difference is too much, the fish will feel uncomfortable and even affect their health.
