Table 1. Mean values (±SD) of water parameters maintained in all tanks.

Parameter	Mean values (±SD)
pH	8.1 ± 0.1
KH	7.2 ± 1.0
Ca2+	447.8 ± 66.4 ppm
Mg	1,493.1 ± 293.5 ppm
NO2−	<0.01 ppm
NO3	<0.5 ppm
NH4	<0.05 ppm
PO4	<0.02 ppm