Pool Black Algae

Black algae is a stubborn type of algae that forms deep-rooted colonies on pool surfaces, making it difficult to remove.

Understanding Black Algae

Black algae typically appear as dark, black, or bluish-green spots on plaster, concrete, and tile surfaces. Unlike other algae types, it forms a protective outer layer, making it resistant to chlorine and other sanitizers.

How to Remove Black Algae

  • Use a stiff-bristle brush to break up the outer protective layer.
  • Apply a specialized black algae treatment or a high-quality algaecide.
  • Shock the pool and maintain proper chlorine levels.
  • Ensure consistent filtration and regular brushing to prevent regrowth.

Related Terms

  • Algaecide – A treatment designed to kill and prevent algae growth.
  • Free Chlorine (FC) – The active and available chlorine that sanitizes pool water.
  • Shock Treatment – The process of adding a high dose of chlorine or oxidizer to break down contaminants.

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