Microcystis is harmful

Toxin Production: Many species of Microcystis produce toxins, primarily microcystins, which are potent liver toxins.

Oxygen Depletion: Large blooms can deplete oxygen levels in the water, leading to fish kills and other aquatic ecosystem disruptions.

Water Quality Impairment: Microcystis blooms can make water unpleasant to look at, smell, and taste. They can also clog water filtration systems and make water treatment more difficult.