Soon into November, cold wind blowing, low temperature, yellow jaw fish is also facing the problem of wintering, in the wintering will often appear a large number of dead fish phenomenon, the following focus on the safe wintering management of yellow jaw fish, to help you raise fish healthily!
Preparation before wintering
Those who need to overwinter in the pool:
If conditions permit, at a water temperature of 20-21 ° C, it is best to disinfect the empty fish pond after disinfecting the water, and then transfer the yellow jaw fish that needs to overwinter to the empty pond.
Those who need to overwinter in the original pool:
1, in the water temperature of 20-21 °C, choose the weather is good to first carry out insecticide disinfection, and then use fruit acid or amino acid detoxification, detoxification can be cultivated 3-5 days after detoxification (mainly with microorganisms such as lactic acid bacteria, EM bacteria, etc.), if the water is not good, you can appropriately supplement phosphate fertilizer, potassium fertilizer or use quicklime (15 to 25 kg / mu).
Winter fertilizer water is divided into two steps
The first step: the whole pond sprinkled with quicklime, so that the water becomes clear, transparency increases, calcium and magnesium and other nutritional factors, to the growth of algae to create a sufficient nutrients, light depth is sufficient environment, this step is very critical, if the organic matter is excessive, winter cyanobacteria is also very common. In short, this season there are algae better than no algae, more algae than less algae.
Step 2: After the water is cleared, the whole pond uses EM bacteria and high-efficiency fertilizer water substances, and opens more aerators during the day on sunny days. This can achieve the purpose of rapid fertilization in winter. Due to the slow growth rate of algae in winter, EM bacteria are used to decompose dead algae to accelerate the growth of new algae, and at the same time, the nutrients required for algae growth are directly increased through phosphate fertilizer and potassium fertilizer, thereby accelerating the growth of algae.
2. Yellow jaw fish needs to do liver and intestinal health care during wintering. Yellowtails during the overwintering period are always fed, but due to the weather, they eat relatively less. Therefore, in the case of large temperature difference between day and night and unstable dissolved oxygen, it is necessary to properly reduce or even stop feeding, and regularly take liver and gall protection drugs for prevention, you can use bile acids and happiness 100 to improve liver and intestinal health and improve immunity.
Precautions for the wintering process of hybrid yellow jaw fish
1. During the wintering period, the pond shall not be filled with new water (such as river water, well water or other water sources), and if it is really necessary to replenish water, a small amount of old pond water can be added.
2. During the wintering period or so, disinfect or change the bottom once, and the disinfection and bottom change are carried out in turn. And choose a good weather and water temperature above 10 °C can be used lactic acid bacteria culture.
3, wintering pond must have a certain degree of fertility, if the water is too thin, the transparency is too high, easy to cause small melon worm disease.
4, the wintering pond water is best to reach more than 2 meters, so that the yellow jaw fish stoppage time will be delayed, some even do not stop the material, after the spring fish physique will be better, the incidence and death will be greatly reduced.
5. If the silt of the overwintering pond is deep, it is necessary to prevent gill mold 1-2 times.