1, aerate the whole pool for at least 7 days. If conditions permit, oxygen bottles can be used to input pure oxygen into the water. Manufacturers are advised to use this method and use a special pure oxygen column. ?

2. After turning the water for 72 hours, observe the swimming of the fish. If the dorsal fin has been basically opened, it can be treated with pesticides. In the absence of careful observation by microscope, spectral insecticides can be used for insecticidal operation, and it is recommended to use insecticides such as dichlorvos;

3. After12-24 hours, use water-soluble antibiotics (such as penicillin and erythromycin). ) Spray the whole pool to prevent secondary infection of small wounds after insects fall off. It is recommended to keep the drug concentration for 3 days.

Extended data

Disease control in koi fish;

I. Disease prevention

(1) disinfection of breeding environment; (2) eliminate the source of infection; (3) cut off the route of infection.

Second, commonly used drugs

(1) malachite green (2) sodium chloride (3) trichlorfon (4) furacilin (5) potassium permanganate (6) copper sulfate (7) formalin (8) bleaching powder (9) methylene blue (10) furazolidone (1/)

Third, taking drugs.

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.

Reference source Baidu Encyclopedia-koi fish Feeding Manual