Introduction to the Use of Fish Pond Aerators

Release time:

2021-06-18

Aerator supplier: The application of pond aerators in fish ponds is an important measure for increasing dissolved oxygen levels in the water, preventing fish from floating to the surface, and boosting aquaculture yields.

Aerator Supplier: Pond Aerator

Aerator supplier: Fish pond aerator In fish ponds, this is one of the important measures for increasing dissolved oxygen in the water, preventing fish from floating to the surface, and boosting aquaculture yields.


1. The oxygenator for fish ponds starts operating on cloudy mornings: At this time, due to the weak intensity of sunlight and the limited oxygen production from phytoplankton photosynthesis, the overall dissolved oxygen level in the water body is relatively low. Therefore, turning on the oxygenator early in the morning—when dissolved oxygen levels are at their lowest—can help prevent fish from floating to the surface with their heads up due to oxygen deficiency around dawn and sunrise.


2. The aerator in the fish pond is currently operating on a sunny day. At this time, there’s a significant temperature difference between the upper and lower water layers in the pond, and the oxygen in the lower layer cannot be replenished promptly. If the aerator is turned on, it will overcome the resistance of the water layers, facilitating an exchange between the upper and lower layers. At the same time, the oxygen gradient in the pond will be greatly reduced, allowing the oxygen from the lower layer to be replenished effectively.


3. The fishpond aerator is used continuously on rainy nights: In such conditions, sunlight intensity is weaker than on cloudy days, and phytoplankton in the fishpond produce very little oxygen through photosynthesis. Therefore, it is essential to operate the aerator continuously from midnight onward to prevent fish from suffocating and floating to the surface.


4. Oxygenators for fish ponds are unnecessary on clear nights: Avoid disturbing the bottom sediment, which would increase oxygen consumption. At this time, photosynthesis by phytoplankton in the pond would come to a halt, and they would no longer be able to supply oxygen to the water. If other methods are employed instead, the dissolved oxygen in the upper water layer will decrease and fail to be replenished, while the dissolved oxygen in the lower layer will be rapidly consumed. As a result, the rate of oxygen depletion will actually accelerate, making it even more likely for fish to exhibit floating-head behavior the next day.


5. The oxygenator for fish ponds should not be used on cloudy days during daylight hours, as this could impair the ability of phytoplankton to carry out photosynthesis using the dim light.


Aerator supplier In addition to adhering to the principle of “three on, two off,” the fishpond oxygenator can also flexibly adjust the duration of operation based on seasonal changes, water quality fluctuations, and weather conditions: it runs longer during hot days and shorter during cool days; it operates longer late at night and shorter at noon; it runs longer after fertilization and shorter when no fertilizer is applied; it runs longer in light winds and shorter in strong winds.

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The relationship between water convection and dissolved oxygen levels in aquatic bodies: The introduction of an aeration device can effectively regulate dissolved oxygen levels.

Although fish floating to the surface can be caused by a variety of factors, in addition to excessive stocking density, overloading the total fish biomass, and poor water quality, the convective properties of water are also a major factor that cannot be overlooked. Simply put, when water temperature is low, its specific gravity (or density) increases, causing it to sink; conversely, when water temperature is high, its specific gravity (or density) decreases, making it float upward. Understanding and mastering the principles of water convection will greatly facilitate the smooth operation of aquaculture. On warm days, after being heated by the sun during the day, the warmer, lighter water tends to stay on top. As the sun sets and the air temperature begins to drop, the upper layer of water cools down, increasing its density, and gradually starts to sink. If the nighttime temperature remains relatively high, the water cools down slowly, and the upper layer won't reach the bottom of the pond until early morning. This is one of the main reasons why oxygen levels tend to drop sharply from late night into early morning on hot days. However, if a heavy rainstorm occurs in the evening, the situation changes dramatically. The cold, heavy rainwater quickly sinks to the bottom of the pond, stirring up sediment, leftover feed, fecal waste, biological residues, and other organic matter from the pond bottom and bringing them into the middle and upper layers of the water. These harmful organic substances rapidly deplete the dissolved oxygen in the water. Before dawn even breaks, the dissolved oxygen in the water may be completely used up, leaving the fish vulnerable to oxygen depletion and causing them to float to the surface—a phenomenon known as "floating and surfacing." Therefore, sudden heavy rainfall in the evening or at night can also lead to oxygen depletion and fish floating to the surface.

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