Methods of increasing oxygen in fish ponds

When raising fish in a pond, if there is a lack of oxygen in the water, it will lead to floating heads of fish and shrimp, which may seriously cause asphyxiation. The following editor will share with you the methods of increasing oxygen in fish ponds.

I. methods of increasing oxygen in fish ponds

There are four common methods to increase oxygen in fish ponds: the first is to be equipped with an aerator, commonly used with water wheel aerator or turbine aerator; the second is equipped with bottom tube aeration, using micropores and nanopores; the third is chemical oxygenation, adding sodium carbonate, calcium peroxide, etc.; the fourth is biological oxygenation to cultivate algae, diatoms and Chlorella.

Matters needing attention in the use of aerators in fish ponds

1. Start the aerator at noon on a sunny day

At this time, the temperature of the upper and lower water layer in the fish pond is quite different, and the oxygen in the lower water can not be replenished in time. If the aerator is started at the right time, the E and the lower water can be exchanged, the temperature difference and oxygen difference can be greatly reduced, and the oxygen in the lower water can be replenished in time.

two。 Start the aerator in the early morning on a cloudy day

At this time, the intensity of sunshine is weak, the oxygen production by photosynthesis of phytoplankton in fish ponds is less, and the condition of dissolved oxygen in the whole water body is poor. Therefore, turning on the aerator in the early morning when the dissolved oxygen point is low can solve the crisis of "fish floating head" caused by lack of oxygen in the water before and after dawn.

3. Start the aerator in the middle of the night on a rainy day.

In the case of continuous rain, due to the lack of sunshine for a long time, the photosynthesis of phytoplankton in fish ponds produces very little oxygen, so it must be turned on in the middle of the night to prevent the death of fish ponds.

4. Do not turn on the aerator in the evening

When the sun goes down, the photosynthesis of phytoplankton in the fish pond will stop and can no longer supply oxygen to the water. Then, if you start the aerator at this time, the dissolved oxygen in the upper water will be reduced and can not be replenished, and the dissolved oxygen in the lower water will be quickly consumed, accelerating the rate of oxygen consumption, and the "fish floating head" will appear more easily in the next morning.

5. How long it takes to start

The time to open the aerator in muggy weather should be long, and the cool weather should be short; the time to open the aerator in the middle of the night should be long and the noon should be short; the time to open the aerator should be long after fertilization and short when it is not fertilized; the aerator should be opened for a long time in wind hours and short when the wind is strong.

In addition, adding oxygen to the fish pond at regular intervals can improve the water quality. Don't wait until there is a lack of oxygen every time.