a few days in spring. Goldfish change water about once a week in spring. The main purpose of changing water is to keep the water clean, because impurities in the water can easily breed bacteria, thus increasing the risk of goldfish disease. Moreover, because of the low temperature in early spring, water should not be changed too frequently. Because changing water will lead to sudden changes in the water quality of goldfish, which will affect their growth and development. At the same time, the frequency of water change is not only related to temperature, but also to the size of the fish tank and the quality of the filtration system. When raising goldfish in a large fish tank, the frequency of changing water can be reduced appropriately. Similarly, when the filtration system is good, the frequency of water change can be reduced appropriately.
for goldfish 1. Fresh tap water contains a lot of chlorine. Goldfish live in this environment, which will have a bad effect on their gills and lungs. Therefore, it is necessary to take out the tap water in advance and dry it for several days before it can be replaced.
2. Pump the old water from the bottom of the fish tank.
3. The temperature of the new water should be 1-2 ℃ higher than that in the fish tank, which can effectively prevent goldfish from getting sick because of the sudden change of water temperature. A small amount of warm water can be added to the dried tap water to raise the temperature of the water.
4. Change one third of the water in the original fish tank each time, not too much.
