questions: query regarding removal of algal bloom. 
 answers: immediately stop the application of feed and fertilization, manually (netting, siphoning), liming- 160 kg/bigha (5-6 ph), 133 kg/bigha (6-6.5 ph), 55kg/bigha (6.5-7.5 ph). 1/3 rd of whole quantity applied 1st installment remaining quantity divided into 11 equal installment applied monthly basis. you can use copper sulphate 0.2-1.0 ppm.