What is blue-green algae or AFA?
Aphanizomenon flos-aquae is not, strictly speaking, algae. Upper Klamath Lake blue-green algae is in the class cyanobacteria, or Cyanophyta as it is currently classified. Spirulina also belongs to this family of organisms. However, the term blue-green algae is ubiquitous in the nutrition industry for describing both spirulina, and Klamath Lake Aphanizomenon flos-aquae, or AFA for short. Chlorella, another nutritional product, is a member of the green algae family. While algae is plural, to avoid confusion, the term is treated throughout this document as singular when referring to spirulina, chlorella and AFA.
