Nutrient Overload Is Not A Good Thing.
Naturally present in small amounts, excessive nutrients like phosphorus causes growth of algae and aquatic vegetation like milfoil. Phosphorus is one of the major nutrients needed for plant and animal growth. It is naturally present in small amounts in freshwater environments, and therefore is considered a limiting nutrient. Just as phosphorus is used to fertilize agricultural land, lawns, and plants, too much phosphorus entering our lake promotes the growth of algae and aquatic vegetation, like milfoil.