gained attention.
Copper sulfate is commonly applied to shrimp ponds to eradicate filamentous algae.
The application of copper sulfate in ponds is also very effective in reducing the
abundance of phytoplankton, including Microcystis and other blue-green algae. These
synthesize and excrete objectionably-flavored compounds, such as geosmin, in pond
water. Fish and shrimp acquire an off-flavor when held in water containing blue-green
algae. The application rate of copper sulfate varies from 0.025 to 2 mg/1 and is directly
related to total alkalinity (Boyd, 1990). Shrimp farmers often apply excess amounts of
copper sulfate in pond management. Therefore, the concentration of copper sulfate
remaining in water and its toxicity is of primary concern.