Best Farming Standards (Practices)

Shrimp Farms: Desired Parameter Ranges

Water Quality Parameters

Optimal Range for Shrimp

Water
Oxygen

ppm

> 4.0  (anytime, on the bottom)

Water temperature

C

28 to 34

pH

7.2 to 8.3

Carbon:Nitrogen:Phosphorus

Ratio

100 : 20 : 5

Secchi disc, % of pond depth

cm

1 m pond = 35% – 40%
4 m pond =25%

Salinity

ppt

P.mon = 15 – 25ppt;
P.van = 5 – 36ppt

Phytoplankton count

cells/ml

300,000 to 800,000

Ammonia (NH3-N)

ppm

FW = < 0.02 ppm;
SW = < 0.13 ppm

Nitrite-N

ppm

FW = < 0.03 ppm;
SW = < 0.84 ppm

Nitrate-N

ppm

FW = < 0.25 ppm;
SW = < 1.8 ppm

Phosphates

ppm

Liner: 1.5 – 2.5 ppm:
Soil:  0.3 – 1.0 ppm

Alkalinity, as CaCO3

ppm

75 – 200 ppm

Calcium Hardness, as CaCO3

ppm

> 100 ppm

Hydrogen sulfide

ppm

< 0.002

FW= Fresh water
SW= Salt water
Soil Quality Parameters

   Optimal Range for Shrimp

Soil
pH

7.0 – 8.0

Organic matter

%

< 3

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