questions: asking about treatment and control for green algal bloom 
 answers: suggested to avoid applying any type of fertilizer and cowdung
remove the green algal bloom by using mosquito net and then apply 8 to 10 numbers od dry paddy straw bundle and let it float for 15 days 
net day please apply lime @10  kg per bigha for 1 month
change the paddy straw after 15 days or wash it with clean water and apply it again for 1 month