Usually, it takes a week to change the water after opening the jar. New water must be aired in advance, after trapped can be injected into the fish tank, if the untreated tap water directly into the tank, the residual chlorine in the water will cause certain harm to the fish, or even death. The amount of water should be changed according to the clarity of the water body, if the water is muddy, it should be changed by one third, and if the water is clear, it can be changed by one fifth.
1. Number of times of changing water: It is definitely necessary to change water when raising fish. If the water is not changed for a long time, it will lead to aging of the water quality. Although such water can not raise dead fish, it is not good. The number of water changes is not too limited, generally once a week can be changed, if the water is clear, it can also be changed once half a month. Do not change too often, frequent water changes will stimulate the fish body, resulting in stress response.
2. How much water to change: Every time you change the water in the fish tank, it is usually one fifth to one fourth of the total water volume. Only when the water is very muddy, you have to change one third. However, this is already the limit, and it is not good to change too much. Fish farming must not change the whole tank, water quality fluctuations have a great impact on the health of fish.
3. Cleaning work: Changing water is not only to discharge part of the old water, but more importantly, to clean up the dirt at the bottom of the tank, such as residual bait and fish feces, so as to prevent the deterioration of water quality and prevent the mass reproduction of microorganisms, which will affect the survival of fish.
