Salt may be used in the process of fish farming, which needs to be prepared in advance. Although salt at home is more convenient, but overall this salt is not particularly suitable, because they belong to refined salt, which contains relatively more iodine, iodine is harmful to the body of fish. It is not recommended to use salt directly, but sea salt or special fish ornamental salt can be used, which will not cause harm to fish.
If you think it's troublesome to buy these salts, you can also use the salt at home, but you need special treatment. You can take an appropriate amount of salt, then dissolve it in a small part of water, and then heat it to remove the iodine element before it can be used.
Although putting a small amount of salt in the fish tank will have a bad impact on the growth of the fish, it will not cause them to die. However, if too much salt is used, the fish may die. Especially for freshwater fish that can't tolerate salt water, they can't survive in high salinity water, and they are likely to die of dehydration. After adding excessive salt to the water, the fish should be fished out in time and put into fresh water, and the water in the original fish tank should be replaced.
