Advantages of liming in pond

• Enhances pond productivity, improves sanitation, and acts as prophylactic and therapeutic.
• Kills pond bacteria, parasites and their intermediate lifecycles.
• Build up alkaline resources and effectively stops the fluctuation of pH by its buffering action.
• Renders acidic water unsuitable for aquaculture by raising pH to alkaline level.
• Promotes mineralization in pond.
• Precipitates excess dissolved organic matter and reduces chances of oxygen depletion.
• Supplies Calcium needed for plant growth and for bone and scales formation in fish.

Time of liming in pond

• When pH is low.
• When alkalinity is too low.
• When organic matter is high.
• When the deposition of pond bottom mud is too high and water gives foul odor.
• When there is threat of oxygen depletion and outbreak of contagious diseases or parasites.
• When fertilization fails to produce an adequate plankton bloom.

Chemicals used for liming

1. Agriculture lime

• Calcite , CaCO₃
• Dolomite, CaMg(CO₃)₂

2. Hydrated lime or slaked lime or Builder’s lime

• Calcium hydroxide, ca(OH)₂.

3. Quick lime or Burnt Lime

• Calcium oxide, CaO.

Liming dose for different soil pH value