Organic waste concentration was considered to be at its maximum
at the fifth day after every cycle of weekly 30% water exchange.
Weekly water exchange was necessary to avoid massive mortality
of the fish due to toxic compound accumulation. At this time, the
produced wastewater was sampled for the bioremediation purposes.
In this study, the sampled wastewater contained an average
of 5.59 ± 0.32 mg L1 ammonia, 0.125 ± 0.25 mg L1 nitrite,
12.22 ± 0.58 mg L1 nitrate and 6.75 ± 0.29 mg L1 phosphate.