Question: asking about fish pond fertilization before fish stocking
Answer: first remove aquatic plant 
apply lime @ 26 kg per bigha as initial dose mix lime with water and keep it for 1 night and broadcast on the next day 
after 7 days apply raw cow dung @ 130 kg per bigha. soak the cow dung in suitable amount of water and apply in the pond
after 7 days apply urea @ 3.5 kg per bigha mix with ssp @ 2.7 kg per bigha in water and then after thes mixture get dissolved apply it in the pond
after 7 days you can start fish stocking