Attention, farmers! To prevent the floating head of fish in autumn, these six measures can be used for reference.

In the golden autumn season, floating head incidents occur frequently in the process of pond culture, which cause a large area of dead fish in the pond and cause serious economic losses to farmers. So why are there fish floating heads? What are the preventive measures?

Why are fish floating heads easy to appear in autumn?

Climate change is often the inducing factor of floating head and disease of farmed fish. When the air temperature suddenly rises or drops, resulting in a difference of more than 5 ℃ between the surface water temperature and the bottom water temperature of the pond, the floating head of fish can be induced.

Therefore, farmers should actively pay attention to weather changes, strengthen management and take corresponding measures in order to avoid floating heads of fish and reduce losses.

Six measures to prevent floating heads of fish in the golden autumn season

1. Pay attention to the weather changes. When the temperature fluctuates, turn on the aerator at noon (14:00) to increase oxygen for 2 hours. In the afternoon (16:00), the last meal will be fed less or not depending on the weather conditions of the day.

two。 Strengthen pond patrol after 0: 00:00 at night and deal with the situation in a timely manner.

3. Strengthen water quality management and timely add new water.

4. Check whether the hardware facilities are running normally, etc.

5. Change the bottom. Due to the increase of feeding, the excretion of fish increases, a large amount of feces sinks to the bottom, and the oxygen consumption during decomposition is serious. In the high temperature season, biological and chemical substrate improvers can be used regularly to change the bottom. Such as the use of "Dibekang + Haichun 202" to change the bottom.

6. Fat water. The main purpose of fertilizer and water is to cultivate the abundance of algae. It is well known that photosynthetic oxygen production by algae accounts for 70% of the total source of dissolved oxygen in water. The abundance of algae in the pond is very important to the culture pond. In a certain range, the greater the algae abundance, the more oxygen production, the more can prolong the time of oxygen supply and alleviate the situation of fish floating head at night. In the high temperature season, Bacillus and high-quality fertilizer products can be used to maintain appropriate fertility and vitality of the water. The water quality is thin using "Hai Ke 3101 + Fei Shui + P Suibu" fertilizer and water, and the water quality is too strong using "Hai Ke 3101 + Shuang Shui Bao + P Suibu" to stabilize the water.