To remove a residual taste or odor from a piscicide treatment, you should treat the water with what?

Activated charcoal is effective in removing residual tastes and odors, especially in aquatic environments where piscicide treatments have been applied. The porous structure of activated charcoal allows it to adsorb a wide range of organic compounds, including those responsible for undesirable tastes and odors. When used in water treatment, activated charcoal can effectively trap and neutralize chemical residues, resulting in cleaner and more palatable water.

In contrast, while sand filtration can remove suspended solids and some contaminants, it is not as effective in dealing with dissolved substances that may contribute to taste and odor issues. Reverse osmosis is a more advanced method that can remove a broad spectrum of contaminants, but it is often more costly and complex than necessary for this specific issue. Chlorination, typically used for disinfection, may not address the taste and odor issues linked to the residual chemicals from piscicides and could even add chlorine by-products that can worsen the taste and odor problem.

Thus, activated charcoal stands out as the most suitable treatment for effectively eliminating residual tastes and odors following piscicide application.