CATDOLL : CATDOLL: What to do if algae in fish ponds are overgrown? Can pesticides be used?

1. What to do if the fish pond is covered with algae? Can pesticides be used?

The disadvantages of algae bloom

When algae overturn occurs, the following phenomena will occur: First, due to the lack of algae photosynthesis, the oxygen production and carbon dioxide utilization of algae will decrease, resulting in a decrease in dissolved oxygen in the water, an increase in carbon dioxide, and ultimately a rapid decrease in the pH value of the pond; second, a large amount of dead algae will decompose, increasing oxygen consumption while producing a large amount of harmful substances such as ammonia nitrogen and nitrite, which will harm fish; third, protozoa in the water will multiply in large numbers, which in turn inhibits the growth of algae; fourth, the lack of algae sedimentation will cause suspended matter in the water to become turbid. When algae overturn is severe, the dissolved oxygen in the water will drop sharply, and ammonia nitrogen and nitrite will increase rapidly, leading to poisoning, cessation of feeding, hypoxia, and illness of fish and shrimp. June to September is the peak season for algae overturn.

Treatment methods for algae infestation

The main reason for the occurrence of algae inversion is excessive weather changes or aquaculture management. In terms of dealing with algae inversion, the editor also has the following suggestions for reference only:

1. Reduce ammonia nitrogen

Excessive ammonia nitrogen in the pond can cause poisoning, feeding cessation, hypoxia, etc. in the fish in the water. The most appropriate way to degrade ammonia nitrogen in the pond is to cultivate heterotrophic microorganisms and quickly degrade ammonia nitrogen through microbial assimilation.

2. Completely change the bottom

“To raise fish, you must first raise the water, and to raise the water, you must first improve the bottom.” The appearance of algae in the pond proves that the bottom has begun to deteriorate. Improving the bottom is to create a better growth environment for fish.

3. Increase oxygen

Algae overturning causes extremely low dissolved oxygen in the pond. We recommend turning on the aerator, which should be turned on for 12 hours if necessary, or the fish pond can be equipped with bottom aerator to increase the dissolved oxygen content in the water.

2. What is yellow natine?

Pelteobagrus fulvidraco

Yellow catfish is often used as medicine. Its meat is sweet and flat in nature, has the effect of dispelling wind and promoting diuresis, and can be used to treat edema, sore throat and other symptoms.

3. What to do if there are blue fish in the yellow catfish pond

The disadvantage of a single-species fish pond is that it is prone to more diseases and pests. It is recommended to use a multi-stage fish pond circulation method to solve this problem.

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