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United States Department of Agriculture

Agricultural Research Service

Title: Testing for Water Quality Problems

Author
item Mitchell, Andrew

Submitted to: Aquaculture Magazine
Publication Type: Trade Journal
Publication Acceptance Date: September 1, 1998
Publication Date: N/A

Interpretive Summary: Water quality problems are common in the pond culture of fishes throughout the southern United States. A simplified explanation of the 11 water quality tests that are used to analyze for these problems is given. The 11 parameters tested for in cultured pond waters include: oxygen, total alkalinity, chlorides, total hardness, temperature, ammonia, pH, iron, hydrogen sulfide, nitrites, and carbon dioxide. Information is given on the circumstances under which a given parameter should be tested. Rarely more than five tests will ever need to be run. Limits and ranges considered acceptable for a given water quality test results are also included. Management and treatment options for the potential water problems are given in the form of a table. Two other tables are included that are useful to determine the level of carbon dioxide and toxic or unionized ammonia in the water.

Technical Abstract: Information is provided on the factors that are required to successfully diagnose a water quality problem. Limits and ranges for the 11 tests (oxygen, total alkalinity, chlorides, total hardness, temperature, ammonia, pH, iron, hydrogen sulfide, nitrites, and carbon dioxide) that might have to be performed are provided. Usually only three to five water quality parameters will need to be tested. Circumstances for preforming given water quality tests as well as management and treatment options are discussed. Two tables are provided that enable the extension agent and the producer to determine the carbon dioxide and the unionized ammonia levels.

Last Modified: 9/10/2014
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