Azim, et al: (2008) reported that high carbon nitrogen ratio further will help create bio-flok and carbon-nitrogen ratio increases further can be done by adding the carbon source, or to reduce the amount of protein in the diet. There are reports of organic carbon sources to fill in the water find that animals can reduce the amount of nitrogen in the pond water animals. And aquaculture has been growing well (Avnimelech, et al., 1999; 2005 Erler)
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