What is the primary function of an algaecide?

The primary function of an algaecide is to control algae growth in aquatic environments. Algal blooms can lead to various ecological issues, including decreased oxygen levels in the water, which can harm aquatic life, and the potential for producing toxins that can be harmful to both animals and humans. By using an algaecide, the growth of unwanted algae can be managed, helping to maintain the water quality and ecological balance in lakes, ponds, and other bodies of water.

While fertilizing plants may promote growth in certain contexts, it's not the purpose of algaecides. Similarly, enhancing aquatic biodiversity is a broader goal that involves many factors, including habitat preservation and pollution control, rather than directly targeting algae. Treating fish diseases is also outside the scope of an algaecide's function, as these chemicals are specifically designed for managing algae, not for the treatment of pathogens affecting fish.