Fish Health and Genetics Laboratory

Routine Water Quality Monitoring

Dissolved Oxygen

To obtain good fish growth, dissolved oxygen levels need to be above 5 mg/liter.


Optimal temperatures for growth:

Diagram showing interrelationships of water quality factors


Nitrogen waste products are excreted from the gills primarily as ammonia.
Un-ionized ammonia levels of 0.02 mg/L are considered safe to fish.

pH Factor

pH & temperature regulates the toxic form of ammonia (un-ionized) that will be present in pond water. pH for fish culture should be between 6.5 and 9.0.

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