Many groups of micro-organism have been used in aquaculture as biological treatmen.
Bacillius blend products are the most common used.
The primary objectiveis for organic waste removal, to prevent it accumulated and caused water quality deterioration. Nitrifying bacteria as well as hydrogen sulfida oxidizing bacteria has also used for ammonia, nitrite and hydrogen sulfida control respectively.
Among these groups, some showed relatively good result whereas many has not shown asignificantly improvement. To obtain better result, selecting the right group of the micro-organism for specific application is needed. Moreover, strain selection for the specivic environment played a major role on the efficiansy of the shrimp culture product.
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