CATDOLL : CATDOLL: What can I use to kill oscillating algae in shrimp ponds?

What can I use to kill oscillatoria in shrimp ponds?

In the morning when the weather is clear, you can use Yangzhou Fisherman's Algae Big, and then use the Cooling Bottom Pill and Bottom Guard in the afternoon of the next day. In extreme cases, you can use Yangzhou Fisherman's Super Essence Powder to cultivate algae and fertilize the water. If the pond is dominated by euglena, use the strong bottom modification on the first day, and then use biological beneficial water or compound probiotics on the second day.

The fundamental method of controlling blue algae

(1) Control the number of rotifers and cladocerans to prevent them from eating small beneficial algae.

(2) Starting from the nutrients required for algae reproduction, try to use fertilizer products containing complex silicon nutrients when fertilizing the water. The nutrients contained in this fertilizer product are absorbed slowly by blue and green algae, while unicellular algae (such as diatoms) absorb them faster. When the water is fertilized, unicellular algae (such as diatoms) will dominate, which will properly control the reproduction of blue and green algae.

(3) Use microbial agents to inhibit the growth of cyanobacteria. Some composite bacteria contain a variety of beneficial microorganisms, which balance the nitrogen-phosphorus ratio through ecological competition; through large-scale reproduction, they compete with cyanobacteria for oxygen, inhibit their photosynthesis, slow down the growth rate of cyanobacteria, and stabilize the pH value; they inhibit the growth of cyanobacteria by secreting extracellular active products; all of these can effectively control the occurrence of cyanobacteria.

(4) Increase the amount of fertilizer and water: Whether in the prevention or treatment of cyanobacteria, on the basis of applying live bacterial preparations, it is necessary to increase the amount of fertilizer and water to balance the nutrient elements of the water body, thereby accelerating the reproduction of beneficial algae, making them become the dominant species as soon as possible, and inhibiting the reproduction of cyanobacteria.

(5) Pay attention to the introduction of beneficial algae: For ponds with less beneficial algae, you can introduce 20-30cm of water rich in diatoms and green algae, and then apply special biological fertilizers in small amounts and multiple times to inhibit the reproduction of blue algae.

(6) Change water frequently: Taking advantage of the fact that cyanobacteria have a weak ability to adapt to changes in the environment, frequent water changes can be adopted to keep the water fresh, inhibit the massive reproduction of cyanobacteria, and prevent the formation of cyanobacterial blooms. When changing water, it is important to note that surface water should be extracted from the downwind area where cyanobacteria are more concentrated, so as to minimize the number of cyanobacteria.

(7) Spray flocculants in areas where cyanobacteria are concentrated to reduce their density.

(8) Spray algaecides in areas where cyanobacteria are concentrated to kill them. It should be noted that the drugs used should be less irritating to white shrimp. After spraying, it is also necessary to use antidotes to reduce the damage caused to white shrimp after the death of cyanobacteria.

I would like to ask what this fluffy, cotton-like substance that appears in the white shrimp breeding pond is and is it harmful?

It is mainly due to the weather. Zooplankton reproduces explosively and eats a lot of algae. If the pond transparency is high, the number of phytoplankton reproduction cannot meet the needs of zooplankton, and they will eat up all the phytoplankton, thus losing the original water color and becoming turbid. Because the water color and transparency in the pond are determined by the types and number of phytoplankton in the pond.

The harm of turbid water is that it causes lack of oxygen in the pond. This is because the main source of oxygen in the pond is the photosynthesis of phytoplankton. It is reported that the content of oxygen produced by photosynthesis of phytoplankton accounts for 91.3%-100% of the dissolved oxygen income of seawater ponds, while the diffusion effect of the atmosphere accounts for only 5.3%-7.8% of the dissolved oxygen income of ponds. Turbid pond water means that there are very few phytoplankton in the pond, and of course there is very little photosynthesis, so the oxygen produced naturally decreases.

June and July are rainy, rainy and torrential rain seasons. In this weather, the sunlight is weakened, photosynthesis is reduced, and oxygen supply is also reduced. In this bad weather, if daily management is not done well, shrimps are very likely to get sick. Shrimp farmers who lack scientific knowledge are not aware of this water color.

It shouldn't be too big, you should ask the experts about this. I know this. I was like you, and the water deteriorated after a long time, so this kind of thing appeared.