Dissolved oxygen is one of the most important and problematic water quality factors in aquaculture, and the actual dissolved oxygen in water is affected by biological, physical and chemical factors.  

When the dissolved oxygen in water is insufficient, it will directly affect the animals.  Secondly, by affecting other biological and physical and chemical indicators in the water environment, the aquaculture animals are indirectly affected, resulting in different degrees of harm to their growth, reproduction and even survival. In light cases, their physique is reduced and growth is slowed down, and in serious cases, floating head and flooding pond, resulting in a large number of deaths.

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