What is a critical environmental condition to monitor when using piscicides?

When using piscicides, monitoring water pH is critical because it significantly influences the toxicity and effectiveness of the chemicals used. The pH level affects the chemical properties of the piscicides and their interaction with aquatic organisms. Each piscicide has a specific pH range within which it is most effective, and deviations from this range can either reduce the efficacy of the treatment or increase the potential harm to non-target species.

For instance, if the water pH is too high or too low, the piscicide may break down more rapidly or become less toxic to target fish while potentially causing harm to other aquatic life. Additionally, fish are also sensitive to pH changes, as it impacts their gill function, metabolism, and overall health. Thus, ensuring the pH is within the optimal range is essential for effective pest management without adversely impacting the aquatic ecosystem.