Question: How to Treat Cyanobacteria or Blue-Green Algae in an Aquarium

  Options: 
 A. Often wrongly called Blue-green or Slime Algae, Cyanobacteria is a common source of annoyance in the aquarium hobby and is in fact, not an algae at all, but a bacteria. Cyano can be killed quickly by dosing the tank with Erythromycin. Erythromycin is a common antibiotic easily found at most Pet stores or sold online.
 B. Often wrongly called Blue-green or Slime Algae, Cyanobacteria is a common source of annoyance in the aquarium hobby and is in fact, not an algae at all, but a plant. Cyano can be killed quickly by dosing the tank with Erythromycin. Erythromycin is a common antibiotic easily found at most Petstores or sold online.
Answer: A