SHARING HOW TO CONTROL ALKALINITY IN SHRIMP PONDS

• Alkalinity is defined as the ability to neutralize acids in water, represented by the total number of basic ions in the water such as hydroxide (OH–), bicarbonate (HCO3–), and carbonate (CO32–).
• Alkalinity indicates the buffering capacity of water, or its ability to resist changes in pH when the environment shifts towards increased acidity or alkalinity.
• High alkalinity helps stabilize pH; conversely, low alkalinity can cause daily pH fluctuations, which can shock the shrimp.
• However, if alkalinity is too high (greater than 200 mg CaCO3/l) and pH exceeds 8.5, shrimp may have difficulty molting due to hard shells, resulting in slow growth.
• In whiteleg shrimp ponds, the appropriate alkalinity level is between 120 – 180 mg CaCO3/l, while for black tiger shrimp, it should be between 80 – 120 mg CaCO3/l to ensure optimal growth.
• To maintain reasonable alkalinity levels, testing should be conducted every two days in the morning.

  

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