The fish tank pump needs to be put into the water, so that the water cavity and the drainage pipe can have enough water to enter, and then take out one end of the drainage pipe, connect it with the container, turn on the power, and then the water can be pumped out. The water pump is generally used when changing water, after pumping out the old water, the new water is added, so as to improve the water environment, reduce the number of harmful substances, and increase dissolved oxygen.
1. Water change cycle: The water change cycle for the fish tank is not fixed. The water quality of the large fish tank is easy to maintain. If there is filtration, it is not easy to be turbid. Therefore, the water change cycle can be a little longer. It is no problem to change the water once every half month. But the small fish tank is not, the water quality deteriorates very quickly, a week must change, otherwise will affect the fish's health.
2. Water volume control: The amount of water to be changed is usually controlled according to the frequency. If the water is changed frequently, it should be changed less; if the water is changed lazily, it should be changed more. If you change the water once a week, one fifth of it is enough, if you change it once a half month, then you have to change one quarter to one third.
3. Precautions: Pay attention to the change of water temperature when changing water, because it will affect the health of fish, and even lead to stress reaction. Therefore, the temperature difference between new water and old water should not be too large, and the new water can be appropriately higher.
