M Naderi Samani - ۱ Ph.D student of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
H Jafaryan - Department of Fishery, Gonbad University of Agriculture Sciences and Natural Resources, Gonbad, Iran
H Gholipour - Department of Fishery, Gonbad University of Agriculture Sciences and Natural Resources, Gonbad, Iran
M Harsij - Department of Fishery, Gonbad University of Agriculture Sciences and Natural Resources, Gonbad, Iran
M Farhangi - Department of Fishery, Gonbad University of Agriculture Sciences and Natural Resources, Gonbad, Iran

A 4 days study was conducted to determine the effects of Different concentration of bioaugmentor bacterial strain Bacillus licheniformisi, B. subtilis, B. polymyxa, B. laterosporus and B. circulans (Protexin Aquatech, UK) on adjustment of parameters of water quality as TAN, NO2-N, NO3-N and turbidity from the effluent of Common Carp ponds. Effects of time and concentration were studied as a completely randomized split-plot design. Time and concentration and their interaction had a significant difference (P<0.05) on changes of total ammonium nitrogen, nitrate nitrogen, nitrite nitrogen and turbidity. The total counts of bacteria recorded in the water of bioremedated tanks were also lower than that in the control tank. 

Bacillus, bacterial treatment, parameters of water quality, bioremediation