of reactive phosphorus in all tanks ranged from 0.1673 to 0.1126 mg/l, which fall
within the limits of O. mossambicus tolerance. Highest phosphorus level was obtained in treatment (A) without
probiotics level as 0.1673 mg/l, where as lowest level obtained in treatment (D) with 0.06 g probiotics
0.1126 mg/l, while treatment (B) and (C) with probiotics 0.02 and 0.04 g followed the trend as 0.1526 and
0.1215 mg/l accordingly. Statistical analysis showed that treatments (A) and (B) significantly higher compared
with treatments (C) and (D), respectively.