Treatment of cyanobacteria in aquaculture water

People who have been farmed in ponds have more or less experienced excessive reproduction of cyanobacteria, which will not only lead to eutrophication of the water body, but also cause the water body to stink and eventually become a "dead pond". So what is the treatment method of cyanobacteria in aquaculture water?

First, why are blue-green algae easy to break out in ponds?

In the process of culture, water can not be changed frequently, too much fish and shrimp, and excessive use of fertilizer will lead to eutrophication, and eutrophication water is very suitable for the growth of cyanobacteria.

In addition, temperature is also a factor in the outbreak of cyanobacteria, when the temperature is too high, the growth rate of cyanobacteria will be significantly accelerated, so we should pay more attention to prevent the outbreak of cyanobacteria in hot weather.

2. treatment methods of cyanobacteria in aquaculture water.

1. Ponds with relatively small water area and stable source can change water regularly, and the early stage of cyanobacteria growth can also be solved by injecting new water in time.

2. Spraying Bacillus subtilis and sodium humate every 10 days or so can also effectively reduce the reproduction rate of cyanobacteria.

3. Culturing some algae-feeding plankton in water can control the growth of cyanobacteria.

4. Adding chemical reagents such as chlorine-containing algaecides and copper sulfate can kill algae.

Matters needing attention in aquaculture

1. Aquaculture should not be too dense, which will lead to the decrease of dissolved oxygen in the water body, and aquaculture products will die easily.

2. Change the water frequently, because the residual bait and fish feces contain nitrogen, phosphorus and other substances, and if the new water is not replaced in time, it will easily lead to eutrophication.