recorded at five different stocking densities

Nitrite Level	Stocking density (individuals.m^-2)
Nitrite Level	30	40	50	60	70
Highest (ppm)	0.066	0.064	0.066	0.066	0.065
Lowest (ppm)	0.015	0.017	0.021	0.027	0.032
Beginning (ppm)	0.066	0.064	0.066	0.066	0.065
End (ppm)	0.024	0.031	0.033	0.045	0.034

Table 4: Nitrite levels recorded at five different stocking densities during 60 days culture period.

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