Effective Alkalinity Management in Shrimp Farming

Alkalinity plays an essential role in the growth and development of shrimp. It directly affects environmental parameters such as pH, algae density, and levels of harmful gases.
In shrimp farming, the ideal alkalinity ranges are:

  • Whiteleg shrimp: 120–180 mg CaCO₃/L

  • Black tiger shrimp: 80–120 mg CaCO₃/L

When alkalinity is low, pH becomes unstable, causing shrimp stress and reduced growth rates.
Let’s explore effective methods to manage alkalinity in shrimp ponds with Sitto Vietnam!

 

Causes of Low Alkalinity

The water source used for farming has naturally low alkalinity (e.g., river water, freshwater wells, or low-salinity farming areas).

Mollusks such as mussels, snails, and clams feed on algae and absorb carbonate salts, causing clear water and reduced alkalinity.

Pond bottoms become covered with moss or excessive algae growth.

 

Methods to Increase Alkalinity in Shrimp Ponds

To effectively raise alkalinity, farmers should minimize and remove mollusks (mussels, snails, clams, etc.).

Use probiotics to reduce algae and moss, lower toxic NH₃/NO₂ levels, and stabilize water color.

Perform daily water exchange of 5–10% using water with medium to high alkalinity.

Apply Dolomite lime at 20–30 kg/1,000 m³ for 3–5 consecutive days to increase alkalinity.

Additionally, farmers can use ALK-Balance, a mineral product designed to increase alkalinity effectively. It provides essential minerals for shrimp during molting, helps reduce stress, enhances immunity, and promotes healthier shrimp.

 

Contact Sitto Vietnam today for expert consultation on high-quality aquaculture products!
Sitto Vietnam – Delivering quality and dedication.

TECHNICAL DEPARTMENT – SITTO VIETNAM CO., LTD.