Blue-green algae references a common group of cyanobacteria found in many lakes and ponds. It is the most noxious form of algae here in North Texas.
What is Algae, Algae Explained
Blue-Green Algae - Boulder County
Algae Control & The Best Algaecide For Ponds - Healthy Ponds
Worsening algae blooms are making Maine's lakes and ponds more toxic
Blue-green algae - Government of Nova Scotia, Canada
Pond Water, Alage Control, Pea Green Water
Algae Control For Ponds - Hydrosphere Water Gardens
How to Prevent, Treat and Control Pond Algae
Project to reduce risk of harmful algal blooms in ponds and lakes
Cornell Cooperative Extension
How do you naturally remove Green Algae from a Pond?