What reason is disease of spot of white of Luo Hanyu, how to treat?

The white spot disease of Luo Han fish may be due to the sudden change of water temperature in the tank. At this time, the fish should be isolated and the water temperature should be raised to 32 C. And soak and washing that sick fish with the methylene blue solution for 30 minute every day until the condition of the fish is improved. It can also be the infestation of small melon insects that causes fish to get sick. At this time, it is necessary to replace all the water in the fish tank, sterilize it with salt water and replace it with new water which has been exposed to the sun. Apply yellow powder or methyl blue under the scales of the diseased fish, change the water and apply the medicine repeatedly every day until the fish is cured.

1. Sudden change of water temperature in fish tank

1. Cause: When the weather changes, there is no timely heating or cooling, or when changing water, the temperature difference between the new water and the old water is too large. These will lead to sudden changes in water temperature, fish can not adapt to temperature changes, easy to cause the outbreak of white spot disease.

2. Treatment: Put the sick fish in a separate tank, use the heating rod to raise the water temperature to 32 ℃, and keep the temperature constant. The fish is bathed with methylene blue solution with the concentration of 2 to 5 ppm for 30 minutes every day until the condition of the fish is improved.

2. Parasitism of Ichthyophthirius

1. Why: Tap water is used to feed fish without treatment. After the small melon insects in the water parasitize the fish, they slowly penetrate into the surface tissue of the fish, and then continue to divide and reproduce, resulting in the infection of white spot disease in the fish.

2. The treatment method is as follows: the water in the fish tank is completely poured out, and the fish tank is sterilized and disinfected by salt water. Then the insolated tap water is poured in, and the oxygen pump is used to supply oxygen to the water to improve the dissolved oxygen content in the water. And then a prop amount of salt is added into that wat to prevent other germs from causing secondary infection to the fish. Then apply methyl blue under the scales of the diseased fish and put the fish in the new water. Repeat changing water and applying medicine every day, and the fish will gradually recover over time.