The purpose of adding salt to the fish tank is to reduce the osmotic pressure of water on fish. If koi fish is not sick, add salt 1%(kg) to the water body (L). If it is used for medicated bath, 3% is enough. Soak 10 minutes or so. Don't take too long. Living in 3% salt water for a long time is prone to various problems.
If koi fish is kept in an aquarium, be sure to ventilate for 24 hours when adding salt. If it is a medicated bath, remember to ventilate and raise the temperature to 30 degrees. If you are naked and there is no aerobic facility, the salt content will be halved. However, most people do not add salt to raise koi fish, so as to ensure that the water quality is no problem, the oxygen supply is in place, and the density is not too high, as long as the fish are in good condition. If you add salt to the fish at ordinary times, the fish will get sick one day, and the old three things have little effect, because the fish has adapted to a certain amount of salt, and salt is ineffective and can only be prescribed.
Extended data:
Disease control in koi fish;
1. oral method: drugs are mixed in the feed to treat malnutrition or bacterial diseases and internal medicine diseases.
2. Medicated bath method: it is mainly to drive away parasites on the body surface and treat bacterial exogenous diseases.
3. Local treatment: treatment of trauma and body surface diseases, and treatment of local trauma.
4. Injection therapy: various bacterial diseases can be injected into muscles or abdominal cavity.
5. Surgical treatment: plastic surgery for injured or deformed fins.