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The Use of Lime, Gypsum, Alum and Potassium Permanganate in Water Quality Management

Document format: pdf

Publisher: Network of Aquaculture Centres in Asia-Pacific

Creation date: June 2002

It is desirable to provide cultured fish with conditions that are within their favoured range for optimum growth and production. However, local environmental conditions may make a pond unfavourable or completely unsuitable for fish culture. Problems that are frequently encountered include soft acidic waters, low natural productivity, high clay turbidity, oxygen depletion and acid sulfate soils. In such circumstances it is desirable to adjust the water chemistry of a pond in order to bring it back into the favoured range of the culture species. Lime, gypsum, alum and potassium permanganate are all chemicals frequently used in aquaculture to regulate water quality and the conditions described above. The usefulness of these chemicals in water quality management for fish culture is reviewed.

Key Words: NACA • Water Quality Management • Lime • Gypsum • Alum • Potassium Permanganate • Aquaculture Fundamentals • FAO