How to use the aerator reasonably
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How to use the aerator reasonably The aerator must be o […]
How to use the aerator reasonably
The aerator must be operated under safe conditions, and the operating time must be determined by combining the stocking density of the fish in the pond, growing season, pond water quality conditions, weather changes, and the load of the aerator to determine the operating time. Waste. Its use should follow the following principles:
1. Open at noon on consecutive sunny days
In the high temperature season for breeding, when encountering continuous sunny days, choose to start the aerator at noon. On sunny days, the photosynthesis of the phytoplankton body is strong. At this time, the dissolved oxygen content in the water is high, and there will be no hypoxia affecting the growth of fish. The purpose of starting the aerator is to adjust the overall dissolved oxygen status of the pond and increase the dissolved oxygen in the lower layer of the water body.
Choose to start the aerator at noon on a sunny day, and rely on the aerator to agitate the water body to increase oxygen. However, by agitating the water body to promote the mixing of the upper and lower water bodies, the upper-middle layer can be brought into the lower-middle layer due to the high oxygen content of phytoplankton photosynthesis, which accelerates the decomposition of organic matter, avoids its decomposition under anaerobic conditions and causes a large amount of dissolved organic matter to accumulate, eliminating the potential The oxygen consumption factor can effectively avoid the harm caused by the rapid decline of dissolved oxygen in the whole pond when the weather changes suddenly.
2. Open in the early morning of the next day on a cloudy day
In the high-temperature breeding season, when the daylight is cloudy and the light intensity is insufficient, choose to start the aerator before sunrise the next day. When it is cloudy, the light intensity is greatly reduced, the photosynthesis of phytoplankton is inhibited, the ability to increase oxygen in the water body is significantly reduced, and the overall dissolved oxygen content of the pond decreases. After nightfall, the photosynthesis of phytoplankton, the main source of dissolved oxygen in the culture water, ceased, and the dissolved oxygen in the culture water showed a continuous downward trend, reaching its lowest point around sunrise on the next day. Because the day before was cloudy, the overall dissolved oxygen in the water was low. It is prone to hypoxia affecting the normal activities of fish. Starting the aerator in advance to increase oxygen can effectively avoid the phenomenon of affecting the breeding production due to low dissolved oxygen in the water body.
3. Open in the middle of the night with continuous rain
In the high temperature season for breeding, when encountering continuous rainy weather, depending on the actual dissolved oxygen monitoring situation, choose to start the aerator in the middle of the night. In continuous rainy weather, photosynthesis of the aquaculture water body was severely inhibited, and the total oxygen content of the water body further decreased. After nightfall, the oxygen content in the water body was rapidly reduced by fish activities, decomposition of organic matter and other aquatic biological activities, and it was difficult to continue until the next day. At sunrise, there will be a phenomenon that the oxygen content is too low and affect the normal activities of the fish. It is necessary to start the aerator early to supplement oxygen.
4. Does not turn on during cloudy days
On cloudy days where the sun's rays are obviously blocked, it is not advisable to turn on the aerator to stir the water. Under cloudy weather conditions, the photosynthesis intensity of phytoplankton in the water body is low, and the amount of oxygen released into the water body is small. At this time, the aerator is activated to increase the dissolved oxygen in the water body. The effect of increasing the dissolved oxygen in the water body is not significant. The water body will accelerate the consumption of dissolved oxygen, resulting in a decrease in the total dissolved oxygen content of the water body. After night, it is easy to cause hypoxia in the pond and affect the normal activities of fish.
5. Not booting in the evening on a sunny day
When the sunny day approaches the evening, it is not advisable to start the aerator without special circumstances. The photosynthesis effect of phytoplankton in the water is significant on sunny days. In the evening, the dissolved oxygen in the upper water body is often supersaturated. At this time, the activation of aeration machinery will cause two unfavorable phenomena: one is to turn on the aerator to agitate the water to increase The upper layer of water is in contact with the air. Because the dissolved oxygen in the upper layer of water is supersaturated at this time, it will accelerate the escape of dissolved oxygen in the water to the air and reduce the dissolved oxygen content of the water. The second is to stir the water to accelerate the mixing of the upper and lower waters of the pond, and the lower layer contains organic matter. More water bodies will consume too much dissolved oxygen. At this time, it is close to the evening, the light intensity gradually weakens, the photosynthesis intensity of phytoplankton decreases, and the oxygen release efficiency decreases, and it is impossible to effectively supplement the dissolved oxygen loss in the water body in time. In view of the above two aspects, starting the aerator in the evening will directly lead to a decrease in the dissolved oxygen content of the entire water body, and the remaining oxygen will not be enough to support the fish to spend the entire night safely and smoothly, and the normal activities of the fish will be affected due to insufficient oxygen content.
The operating time of the aerator is generally long at midnight, and it can only be shut down after sunrise; the startup time is short at noon; fertilization, hot weather, large water surface, or large water surface load of the aerator, the startup time will be longer, and vice versa Then the boot time is short.