What negative effect can high pH levels have on aquatic life?

High pH levels can cause harm to aquatic life primarily by affecting the biological and chemical processes in the water. Many aquatic organisms, including fish and invertebrates, are sensitive to changes in pH. When pH becomes excessively high, it can lead to a condition known as alkalosis, which can interfere with the respiratory and metabolic functions of these organisms. This can stress or even kill aquatic life that cannot adapt to the altered conditions.

Additionally, high pH levels can inhibit the availability of certain nutrients and minerals essential for aquatic organisms, diminishing their ability to thrive. The balance of ions in the water can also be disrupted, affecting the overall health of the ecosystem. Consequently, maintaining a balanced pH is crucial for ensuring that aquatic environments remain healthy and support biodiversity.