questions: query regarding removal of algal bloom. 
 answers: removal of algal bloom-
1. immediately stop the application of fertilization or stop applying feed.
2. manually- siphoning,
3. chemical use- copper sulphate 2-10 kg, ammonia 1% aqueous solution, 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.