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Planktonic Algae

Chlamydomonas, Chlorella, Euglena, Closterium, Anacystis spp.

Also known as “blue-green” algae, this type of algae is actually millions of microscopic plants that give the pond a “pea-soup” appearance. If left untreated, natural die-off in the fall may cause a fish kill.

Also known as: Blue-green algae; pea soup; scum; waterbloom, microscopic algae