Putting a proper amount of salt in the fish tank can play a good role in disinfection and balancing osmotic pressure, which is beneficial to fish. But what needs to be used is coarse salt, not refined salt, nor iodized salt. Iodized salt refers to salt containing potassium iodate, which contains more iodine, and this element is harmful to fish, especially for freshwater fish. Therefore, it is recommended not to use iodized salt. If you think it is more convenient to use iodized salt, then you can take certain measures to remove most of the iodine elements, so that the harm will be much smaller.
Edible salt is a common condiment in our home, and a large part of it is iodized salt. Therefore, it is recommended not to use this salt, from the store to buy special large granular salt is more appropriate, and the price will not be particularly expensive. Even if we want to use edible salt, we need to find ways to remove the iodine element. One of the more commonly used methods is to dissolve a proper amount of iodine in water, and then heat it, so as to remove part of the iodine, which can be used at this time.
In addition, special attention should be paid to the concentration when using it. For marine fish, their tolerance to salt may be better, but freshwater fish's tolerance to salt is not particularly good, so the concentration should be strictly controlled. The specific amount of salt can be determined according to the specific amount of water, if the salt is too much, it can be diluted appropriately.
