Causes and treatment methods of algae falling from ponds

Friends of aquaculture often encounter the phenomenon of algae falling from ponds, which often causes heavy losses to many farmers, especially in time of high temperature and more rainfall, which can easily lead to stratification of water bodies and sudden changes in salinity, which leads to the death of a large number of algae and aquaculture aquatic products. So what is the cause of algae falling in the pond? What should I do with it? Let's get to know it.

First, the harm of falling algae in the pond

When algae fall from the pond, dead algae, commonly known as yellow floating matter, will partly form an oil film in the lower tuyere of the pond, which will often lead to increased viscosity of the water body, more foam, and some foam is relatively dirty khaki. When a large number of algae die, carbon dioxide can not be absorbed, dissolved in water to form carbonic acid, resulting in low PH in the pond, while dead algae will consume a lot of oxygen after decomposition, aggravating pond hypoxia, and then produce toxic and harmful substances such as hydrogen sulfide, ammonia nitrogen, nitrous acid and so on, resulting in acute poisoning and death of cultured shrimp and crabs.

Second, the reason for the fall of algae in the pond

1. Sudden climate change

The sudden change of weather will change the water quality, and the aquaculture in the pond will have a stress response, especially after continuous rainstorm, the change of water temperature and pH value of the pond will lead to the death of a large number of algae.

2. Hypoxia

Lack of oxygen in ponds can cause acute death of all organisms, not only algae, but also farmed aquatic products in a short period of time, mostly garlic in muggy summer weather.

3. Improper use of drugs

In the process of aquaculture, a large number of disinfectants, pesticides and heavy metal salt products are used, which will affect the growth and reproduction of algae, resulting in algae inversion.

4. Change a lot of water

A large number of water in the pond is changed, resulting in water stress, especially in the case of poor water quality, algae fall is more likely to occur.

Third, the treatment method

If there is a phenomenon of algae dumping, in the case of an aerator, it is necessary to turn on the pond aeration equipment in time, carry out emergency oxygenation, and then change a large number of water, generally draining outward during the day and adding water to the inside in the evening. Ultra-concentrated organic acid and Navesu were applied to detoxify and resist stress, potassium persulfate was used to change the bottom, and the bottom environment was improved. The pond is in a hypoxic environment, the number of anaerobic bacteria is increasing, disinfection should be done properly, iodine preparation or Bdellovibrio can be used. Adding nutrients such as Navisu and Ganlijian to the feed can dispel the toxic substances in the aquatic products and recuperate the intestines and stomach.

The above is the introduction of the reasons and treatment methods of algae fall in the pond. I hope it can help you. If you want to know more about it, please follow us.