Hydrogen peroxide as a mitigation against sp. bloom.

sp. is a harmful cyanobacterial species commonly seen in earthen ponds. The overgrowth of these algae can lead to fluctuations in water parameters, including DO and pH. Also, the microcystins produced by these algae are toxic to aquatic animals. This study applied hydrogen peroxide (7 mg/L) to treat sp. in a laboratory setting and in three earthen pond trials. In the lab we observed a 64.7% decline in sp. And in our earthen pond field experiments we measured, on average, 43% reductions in sp. cell counts within one hour. The treatment was found to eliminate specifically sp. and did not reduce the cell count of the other algae species in the pond. A shift of the algae community towards the beneficial algae was also found post-treatment. Lastly, during the pond trials, the gill status of Tilapia and Giant tiger prawn were not affected by the HO treatment suggesting this may be a good mitigation strategy for reducing cyanobacteria in pond aquaculture.