The whole tank change water can not directly put fish, after changing water, the water quality has changed greatly, if there is no water test, directly put fish may lead to the death of fish, so we need to measure it to see how the water quality is, if there is no problem, we can put fish into the tank. If there is no problem for a week or two, the fish can be put into it. Usually, it is rare to change the water in the whole tank, and it is only necessary when the fish dies and so on.
should be paid attention to when changing water? 1. Pay attention to the frequency: The first thing to pay attention to when changing water is the frequency. Changing water too frequently will stimulate the fish. Changing water infrequently will not improve the water quality. Therefore, it is generally necessary to determine the cycle of water change according to the deterioration rate of water quality, usually every seven days, but it can also be changed every five days, every three days, or even every half month.
2. Pay attention to the amount of water: In addition to the frequency of water change, the amount of water should also be considered. Like frequent water change, too much water change is also harmful to the health of fish, so the amount of water should be determined according to the cycle of water change. If it is changed frequently, the water should be changed less each time, and if it is not changed frequently, it should be changed more appropriately, but not more than one third of the total water volume.
3. Pay attention to the water temperature: In order to ensure the health of the fish, the temperature before and after changing the water should also be consistent. Usually, before changing the water, the water temperature of the old water should be measured first, and then the new water should be prepared according to this temperature. Generally, it is enough to heat the water inside to ensure that the water temperature does not change more than 2 ℃.
