Fish can be raised after the boiled water is cooled. However, it should be noted that this kind of water cannot be used completely. It can only be added partially when the water is changed. Although after heating, the residual chlorine in the water has volatilized, and can also reduce its hardness, but it will also lead to a large loss of oxygen in the water, if the fish are completely raised in this water, the fish will die because of lack of oxygen.
1. Insufficient oxygen: As mentioned above, in the process of heating water, oxygen will gradually dissipate, so the oxygen content will be reduced, which is more unfavorable for fish. Of course, there are some ways to make up for it, such as using oxygenation equipment to add oxygen to the water.
2. Lack of nutrition: Heating will reduce the hardness of water, which is not necessarily a good thing. The hardness of water is mainly due to the fact that it contains many trace elements, which will gradually precipitate after heating, so that the nutrients of the water body will decrease.
3. Lack of beneficial bacteria: It is well known that bacteria can be eliminated when water boils. Bacteria are not only harmful, but also some beneficial bacteria. These bacteria are helpful to the health of fish. Killing them will also reduce the value of water.
4. Change the water quality: Heating will change the pH and hardness of the water body. When this kind of water is mixed into the fish tank, it will cause the water quality to fluctuate, which will also cause the fish to get sick. Therefore, if you do not use this kind of water all the time, it is best not to change it suddenly.
