Total nutrient (N and P) input, output, uptake and accumulation in the culture
system during the rearing cycle were measured. The nutrient budget of N and P were
calculated based on inputs from water, fertilizer, stocked shrimp and feed; and
outputs were calculated based on harvested shrimp, drained water and sediment.
Nutrient input and output in the form of water was calculated by multiplying the
nutrient concentration with total water volume. Nutrient input in the from of water
represents nutrient contained in water on the day of shrimp stocking, as water
sample was collected on the same day prior to shrimp stocking. This is to note that