To prevent the "autumn plague" of fish

In autumn, fish are prone to acute diseases with high mortality, such as impotence, small claw, Gill rot, water mildew and so on, commonly known as "autumn plague". In order to prevent and cure the "autumn plague" of fish, we should do a good job.

1. Improve the ecological environment. Pay attention to ecological control, properly feed full-price concentrate, tender grass, etc., start eating early, try to meet the nutritional needs of fish growth, in order to improve their immune ability.

2. Actively add new water. Adding new water can bring oxygen and a variety of nutrients, such as iron, manganese, silicon, etc., and can also dilute the organic matter and biological metabolic poisons in the pool water, which is more conducive to disease prevention.

3. Try to control the water level. When the pond water is needed to water the crops, try to keep the water level in the pond 70cm to 80cm deep.

4. Drugs purify water quality. Applying chemicals to the pond to purify and improve the water quality can reduce the breeding of fish disease. Such as calcium superphosphate, trichlorfon, copper sulfate, bleach and so on.

5. Strengthen the killing of insects in fish. The in vitro parasitic disease of fish is the inducing factor of many diseases. We must strengthen the observation to kill the pest thoroughly and put an end to the harm of various complications.

6. Add bait appropriately. Regular and appropriate amount of "Yujianling" and salt are added to the fish feed to enhance the fish's ability to resist diseases.

7. Avoid stirring of carp. If there are more carp in the pond, concentrate should be added accordingly to make the active carp full and lazy, so as to avoid muddy the pond water.

8. Neutralize the pH. In autumn, ponds are often acidic, but in an acidic environment, fish have slower metabolism, less food intake, poor digestion and weak disease resistance, so they should regularly apply appropriate amount of quicklime to neutralize acidity and alkalinity.