When should the oxygenator for the fish pond be turned on, and when should it be turned off?

Release time:

2021-12-29

An oxygenator for fish ponds is an important measure to increase dissolved oxygen in the water, prevent fish from surfacing, and boost aquaculture yields. The following is an introduction to the proper use of aerators:

　　 Fish pond aerator It is one of the important measures for increasing dissolved oxygen in water bodies, preventing fish from floating to the surface, and boosting aquaculture yields. The following is an introduction to the proper use of aerators:

　　1. In the cloudy morning, turn on the aeration machine in the fish pond: At this time, due to the relatively weak sunlight intensity, phytoplankton produce less oxygen through photosynthesis, resulting in poorer dissolved oxygen levels throughout the water body. Therefore, starting the aeration machine early in the morning—when dissolved oxygen levels are at their lowest—can help prevent the danger of fish floating to the surface due to oxygen deficiency around dawn.

　　2. At noon on a sunny day, turn on the aeration machine in the fish pond: At this time, there is a significant temperature difference between the upper and lower water layers of the pond, and the lower layer lacks timely oxygen replenishment. If the aeration machine is turned on, it can overcome the resistance of the water, facilitating the exchange between the upper and lower layers. As a result, both the temperature difference and the oxygen difference are greatly reduced, allowing for adequate oxygen supply to the lower layer.

　　3. The aeration machine in the fish pond should be turned on in the middle of the night during prolonged rainfall: In such conditions, sunlight intensity is weaker than on cloudy days, and phytoplankton in the fish pond produce very little oxygen through photosynthesis. Therefore, it’s necessary to turn on the aeration machine in the middle of the night to generate oxygen and prevent the fish from suffocating in the pond.

　　4. On clear nights, do not turn on the aeration equipment in fish ponds: This prevents stirring up sediment and increasing oxygen consumption. At this time, photosynthesis by phytoplankton in the pond will come to a halt, and oxygen can no longer be supplied to the water. Once the aeration equipment is turned on, the dissolved oxygen in the upper layer of water will decrease rapidly and cannot be replenished, while the dissolved oxygen in the lower layer will be consumed at an accelerated rate, further speeding up oxygen depletion. As a result, fish are more likely to float to the surface the next day.

　　5. Do not turn on the aeration equipment in fish ponds during cloudy days: This is to avoid using weak light that could disrupt the photosynthesis of surface phytoplankton.

　　In addition to adhering to the “three on, two off” principle, fishpond aerators must also flexibly adjust their operating times according to seasonal changes, water quality variations, and weather conditions—for example, running them longer during hot days and shorter during cool days; running them longer late at night and shorter at noon; running them longer after fertilization and shorter when no fertilizer is applied; running them longer in low-wind conditions and shorter in high-wind conditions.


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