Fish out the fish and soak the tank with about 3% - 5% potassium permanganate. Without fishing out the fish, sterilize it with 0.5ppm (0.00005%) potassium permanganate.

To medicate inside the fish tank, use 1ppm --- 2ppm (that is, inside 0.0001% --- 0.0002%) of potassium permanganate. 2 grams of potassium permanganate with 998 grams of water, potassium permanganate and water mass ratio is 1:499. potassium permanganate solution is often used for disinfection.

For the dosage of potassium permanganate, in the amount of 30 milligrams per liter of water, 100 liters of water three grams, the dosage of medicinal baths for ten minutes, in the therapeutic effect, whether it is a fungal infection or a bacterial infection, or gill parasites, etc., in the use of potassium permanganate medicinal baths after the fish will have a great improvement in the state of the fish.

Expanded Information:

The use of potassium permanganate to sterilize the aquarium is in the use of the strong oxidizing properties therein, which will make these bacteria in the body of the metabolic disorders, and finally will make the bacteria extinct.

The use of high concentration of salt water immersion, can also remove the bacteria inside the fish tank. Generally adapted to the larger fish tank, there is also this kind of fish tank inside the bacteria reproduction is particularly large, will lead to the fish is difficult to normal growth and development, so it is necessary to carry out sterilization treatment in a timely manner.

The fish tank will be placed in the sun exposure, very suitable for small fish tanks, small fish tanks are easy to move, put it outside, high temperature exposure for a period of time can also be sterilized. High-temperature sun sterilization before, should be the original water in the fish tank are clean, and then put it in the sun in the sun, usually sun one day to two days or so, which can also remove the bacteria.