The fish is covered with bubbles after changing the water, which means that the water is changed too much. Changing too much water causes the water pressure to decrease, and the pressure inside and outside the fish is different, which leads to bubbles on the body. When bubbles appear, they need to be treated immediately, otherwise they will affect their health and even lead to their death. The method of treatment is also very simple, as long as the bubbles on the body surface are erased, and the water should be controlled at ordinary times.
1. Frequency of changing the water: The frequency of changing the water for the fish is not fixed. It is difficult to maintain the water quality in the small fish tank. Therefore, it is necessary to change the water frequently. Usually, it is necessary to change it once every three or four days. For a larger fish tank, it can be changed once a week. If the filter system in the cylinder is better, it can be changed once half a month.
2. How much to change: The amount of water to change is generally related to the frequency of changing water. The more frequently you change water, the less you change. If you change water once every three or four days, you can change one fifth of the total amount of water each time. If you are lazy in changing water, you should change more, but not more than one third at most.
3. Precautions: When changing the water for the fish, make sure that the water temperature does not change too much. The new water can be a little higher than the old water. When changing the water, you need to pump the old water from the bottom first, so that you can clean up the fish feces and residual bait. Then pour the new water from the tank wall slowly, do not use violence to change the water.
