Table 2. Water quality parameters (mean ± SD) during the feeding trials.

Water parameter	Recirculating Aquaculture System (RAS)
	Replicate 1	Replicate 2	Replicate 3
Temperature (°C)	26.20 ± 0.70	26.50 ± 0.30	26.38 ± 0.69
pH	7.70 ± 0.16	7.81 ± 0.07	7.83 ± 0.03
Total ammonia (mg/L)	0.16 ± 0.01	0.20 ± 0.03	0.15 ± 0.01
Nitrite (mg/L)	0.31 ± 0.01	0.34 ± 0.01	0.30 ± 0.01
Hardness (mg/L)	218.54 ± 3.47	225.24 ± 2.64	212.46 ± 1.28