in the tropical fish tank? There is no salt in the tropical fish tank, unless it is marine fish or soda fish. There are certain requirements for the salinity of the water body. Freshwater fish do not need to put salt. The structure of fish is different, the demand for salt is also different, if put too much salt, the osmotic pressure of the water will change, which will lead to the water seepage in the fish body, and eventually lead to dehydration and death, so it is good to feed with fresh water, only when sick need to put a small amount of salt.
of salt? 1. Prevent the invasion of bacteria: Usually, when the fish is sick, salt is needed, but the purpose of salt is not to sterilize, because the concentration of salt is relatively low, it is difficult to achieve the effect of sterilization, but it can improve the osmotic pressure of water, so as to reduce the infiltration of water into the fish. Germs can't get in.
2. Reduce the burden on the kidney: As mentioned above, putting salt can change the osmotic pressure. Water will permeate from the place where the osmotic pressure is low to the place where it is high. If less water enters, the fish will need less water to discharge. In this way, the burden on the kidney can be reduced, which is helpful to its recovery.
3. Sterilization and disinfection: Although normal salt can not achieve the purpose of sterilization and disinfection, fish can be fished out of the fish tank and soaked in specially prepared salt water. Because the concentration is relatively high, it can achieve the effect of sterilization, but the soaking time can not be too long, and the fish should be put back immediately after discomfort.
