How to change the water in the fish tank of tropical fish How often do tropical fish change the water?

1. In order to ensure the cleanliness of water quality, tropical fish are usually changed every other week or so. If the water tank has a filter, it can be extended to half a month. It should be noted that due to different feeding conditions, the interval between water changes should be controlled by yourself. If you can keep the aquarium at a constant temperature, you can keep the water change interval unchanged. If the water temperature changes with the seasons, it should be changed more in summer and less in winter.

2. Tropical fish generally choose tap water to change water. Disinfected tap water often contains chlorine, and the fresh water can't be used. Instead, dry it for a few days, and then use it after the chlorine volatilizes.

3. Pay attention to water temperature and water quality when changing water for tropical fish. Because this kind of fish requires extremely high temperature, the change of water temperature has a great influence on it, so it should be controlled well. Generally, the temperature difference between new water and old water should not exceed 1-2℃. According to the habits of fish, the pH of water should also be paid attention to, and the pH should be kept between 6.0 and 7.8.

4. When changing water for a fish tank, it is usually necessary to pump water from the bottom, so as to clean up the bait and fish manure left at the bottom of the water and avoid the deterioration of water quality. Fresh water should be poured in slowly from the top, not all at once, so as to avoid the water temperature changing too much, so as not to stimulate the fish and ensure the healthy growth of the fish.