News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.

Li Li


Pond bottom dry-out and liming, part 2

The authors believe that dry-out periods likely destroy most organisms in pond bottoms, and liming of the entire bottom area should be done only to neutralize soil acidity and increase pH for organic matter decomposition by soil microorganisms. 


Pond bottom dry-out and liming, part 1

The main pond bottom soil management practices used in semi-intensive culture are pond dry-out and liming between crops. These practices accelerate organic matter decomposition, neutralize soil acidity and destroy unwanted organisms. 

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Reactions between pond bottom soil, water

Alkalinity and acidity in pond water and soil interact and can result in unhealthy culture conditions. Ion exchange occurs between soil and water until an equilibrium is reached.