, indicating that the water quality is relatively poor and needs to be changed in time. Usually, the water should be changed every five to seven days, and each time it can be changed by about a quarter, up to a third of the total water volume. Before changing the water, you need to dry the water for a period of time, only one day in summer, two days in spring and autumn, and about three days in winter. In addition, when changing water, we should also pay attention to the water temperature, so that the temperature can not change too much.
1. Deterioration of water quality: Fish farming must change the water. No matter how good the filtration is, it is impossible to maintain the water quality all the time. The deterioration of water quality will make the water white. In order to maintain water quality, besides changing water, we should also strengthen filtration. The quality of filtration determines the speed of water quality deterioration. Filter cotton can be cleaned or replaced regularly.
2. Too much feeding: Usually the deterioration of water is also related to feeding. Excessive feeding will not cause the fish to die, but the unfinished food will become residual bait, which will pollute the water body after decomposition, thus affecting the health of the fish. Therefore, daily feeding is best to control the amount of food, each time to ensure that the fish eat within 3-5 minutes.
3. Nitrification system collapse: a good nitrification system is also helpful to water quality. Once a large number of nitrifying bacteria die, the water will soon become white. In this case, the best way is to re-cultivate nitrifying bacteria, in addition to pouring in the culture medium, but also to turn off the light to promote its growth and reproduction.
