1. Hypoxia in aquaculture water is a common phenomenon in pond aquaculture

First, with the warming of the earth and the negative effects of rapid economic and social development, the water environment has been deteriorating day by day. The pollution of rivers, lakes and rivers, acid rain in the world, coupled with the utilitarianism of aquaculture technology and the abuse of chemical fertilizers, drugs and antibiotics, have also caused the microbial environment to suffer. damage and aggravate the hypoxia of the environment.

Second, the majority of farmers have insufficient understanding of the impact of pond water hypoxia on the breeding environment and animals. They are only limited to solving the floating heads and flooding of farmed animals. They are far from realizing that water hypoxia will cause serious environmental degradation and ecological Imbalance, which in turn affects the healthy growth of farmed animals and the quality of products, especially the farming of green shrimp and river crabs. Mistakenly believe that as long as we grow water plants well, we can raise crabs and shrimps, but we don’t know that water plants, like all living things, respire at night and stop photosynthesis. Therefore, the shrimp and crab breeding ponds are often in an oxygen-deficient state at night. At the same time, the principle, method and advantages and disadvantages of various oxygenation are not well understood. In the process of use, there are often results with half the effort or even counterproductive.

2. The impact of water hypoxia on the breeding environment and breeding animals
The impact of water hypoxia on the breeding environment and breeding animals has also undergone profound changes in understanding with the improvement of human requirements for the living environment. This change comes from the fact that the human environment is suffering increasingly serious damage, the second is from people's call to improve the quality of aquatic products, and the third is from the demand of farmers to increase production and income.

The lack of oxygen in the water body reduces the self-purification ability of the water body, the organic matter in the water body cannot be decomposed quickly and effectively, the toxic and harmful substances increase, and the residual bait and feces on the bottom of the water are accumulated after insufficient feed utilization. The enrichment of nutrient salts aggravates the deterioration of water quality.

The lack of oxygen in the water body makes most farmed animals face the stress of hypoxia at all stages of their life history, especially at night in the high temperature season. Its metabolic rate is slowed down, and food intake, digestion and absorption, activity, growth, and disease resistance are not as good as normal. The seafood produced in this environment is by no means healthy by modern standards.

How to solve the lack of oxygen in the environment, rescue the farmed animals from the "depressed" water environment, and produce healthy aquatic products, in addition to cleaning and disinfection of the pond environment, adopting ecological breeding techniques such as reasonable stocking and scientific collocation, the most important thing is The direct way is to add oxygen to the water body.

At present, there are many ways to increase oxygen, but how to achieve a reasonable and effective way to maintain the amount of dissolved oxygen in the water body 24 hours a day (especially in the high temperature season) that meets the needs of breeding animals, it is necessary to increase the oxygen method and operation method. improvement of.

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