Question: asked about fish pond management
Answer: aplly lime @ 100 kg per bigha- for monthy or quaterly dose @ 10 kg per bigha- mix with water and keep it for 4 hrs and spray 
after 7 days apply cowdung @ 260 kg per bigha, mix with wter and spray
after 7 days apply ures @ 3.5 kg and ssp @ 2.5 kg per bigha- mix together with water and spray
feed @ 3 % per body weight
ricebran and mustard oil cake as feed - 1:1 or 50:50
mutard oil cake @ 20 kg per bigha can be given