Table 5. The average values and range of water quality parameters in the concrete pond during the 90-days of experiment.

Water quality parameters	n	Mean ± SD	Range	WHO/FAO limits	References
Water temperatures (°C)	45	28.01 ± 1.06	27–30	25–33	Prokoso et al. 43
Dissolved oxygen (mg/L)	14	6.01 ± 0.14	5.80–6.20	3–5	Syandri et al. 44
Total alkalinity (mg/L as CaCO 3)	14	58.09 ± 3.33	52.5–62.5	120	Boyd et al. 45
Hardness (mg/L as CaCO 3)	14	66.34 ± 1.32	65–68.5	168	Boyd et al. 45
pH	14	7.48 ± 0.19	7.2–7.8	6.5–9.0	Boyd et al. 45
Nitrates (mg/L)	14	0.04 ± 0.01	0.03–0.05	0.2–219	Boyd and Tucker 46