of salt are three thousandths of 100 liters of water? 100 liters of water is 100 kilograms of water, and three thousandths of it is 300 grams, so 300 grams of salt should be added. Usually the fish tank will not put too much salt, because freshwater fish have limited tolerance to salt, if too much salt will cause discomfort. Under normal circumstances, three to five thousandths is the limit, only special times to use more, and the higher concentration of salt water often can only soak fish for a while.
of salt? 1. Sterilization and disinfection: Salt water can play the role of sterilization and disinfection, which is beyond doubt, but there are certain restrictions on the concentration requirements, usually controlled at about 1%, 3% is the limit. And in this concentration, the soaking time can not be too long, generally only five minutes, the higher the concentration, the shorter the soaking time.
2. Reduce the burden of the kidney: The main purpose of putting salt in the fish tank is to change the osmotic pressure, because for freshwater fish, the osmotic pressure in the body is higher than the osmotic pressure of water, so water will constantly enter the body from the outside world, which requires the kidney to discharge excess water, and after adding salt, the osmotic pressure of water increases, less water enters, and the burden of the kidney is small.
3. Prevent the invasion of pathogens: As mentioned above, the osmotic pressure of the water body can be changed by adding salt, thereby reducing the water entering the fish body. Another advantage of this is that the invasion of harmful bacteria in the water will be limited.
