Modeling Nile Tilapia Heterogeneous Growth under Different Stocking Densities during Pre-Grow-Out Stage

Table 1

Water quality of intensive pre-grow-out of Nile tilapia Oreochromis niloticus in a biofloc system with three stocking densities.

Variable	Treatment 1	Treatment 2	Treatment 3
Temperature (°C)	31.78 ± 0.54	31.58 ± 0.84	31.85 ± 0.51
Disolved oxygen (mg L^−1)	4.99 ± 0.27	4.75 ± 0.35	4.93 ± 0.33
pH	7.98 ± 0.11	7.95 ± 0.09	7.95 ± 0.10
Ionized ammonium (mg L^−1)	1.25 ± 0.63	0.94 ± 0.57	0.53 ± 0.41
Nonionized ammonium (mg L^−1)	1.26 ± 0.92	1.09 ± 0.67	0.64 ± 0.53
Nitrite (mg L^−1)	1.15 ± 0.56	1.16 ± 0.39	1.13 ± 0.72
Alkalinity (mg L^−1)	315.17 ± 27.53	299.16 ± 10.20	291.60 ± 11.25