Household salt cannot be used to disinfect fish. On the one hand, it is because salt contains iodine, which is harmful to the health of fish. On the other hand, because the concentration of salt disinfection requires a higher concentration, although this concentration can sterilize, but the fish can not live. Therefore, salt disinfection is basically not used, and yellow powder or chlorine dioxide is used as disinfectant.
1. Reduce the burden on the kidneys: Salt in the fish tank does not have a bactericidal effect, but it can change the osmotic pressure of the water body. Because water will infiltrate from a place with lower osmotic pressure to a higher place, and the osmotic pressure in freshwater fish is higher than that of water, it will lead to water infiltration, and it needs to use kidney drainage, by adjusting the osmosis pressure of water, it can reduce its kidney burden.
2. Inhibition of bacterial infiltration: As mentioned above, adding salt can change the osmotic pressure. When a fish is sick, the water contains a large number of bacteria, which will also enter the fish along with the water. By changing the osmotic pressure, the infiltration of bacteria can be inhibited, which is more helpful to its treatment.
3. Marine fish need salt water: In addition to freshwater fish, marine fish also need salt. Of course, it also includes some fish that have their own requirements for salinity. For example, soda fish, cichlids in the three lakes, and so on, they need to add appropriate amount of salt to the water according to different needs.
