Why is my pool still green after shock and algaeicide?

If your pool is still green after shocking and using algaecide, it could be due to several reasons:

  1. Insufficient shock: The shock treatment may not have been strong enough to kill all the algae.
  2. Algae type: Some types of algae, like black algae, are more resistant to chlorine and algaecides.
  3. Cyanuric acid (CYA) level: High CYA levels can reduce the effectiveness of chlorine.
  4. Filter issues: A dirty or clogged filter can prevent chlorine from circulating throughout the pool.
  5. Phosphate levels: Phosphates provide nutrients for algae to grow.

How to solve the problem:

  • Retest your CYA and adjust accordingly.
  • Use a stronger shock treatment or algaecide.
  • Clean or backwash your filter.
  • Add a phosphate remover.
  • Brush the pool walls and floor to remove algae buildup.

Additional tips:

  • Maintain a proper chlorine level (3-5 ppm).
  • Run your pool pump for at least 8 hours per day.
  • Keep your pool covered when not in use.
  • Check your water chemistry regularly.

Related questions:

  1. How often should I shock my pool? At least once a week during peak season.
  2. Can I swim in a green pool? No, it's not safe to swim in a green pool.
  3. What's the difference between shock and algaecide? Shock kills algae, while algaecide prevents algae growth.
  4. Is it safe to use multiple chemicals in my pool? Yes, but follow the instructions carefully.
  5. What's the best way to prevent algae growth? Maintain proper pool chemistry, clean your filter regularly, and use a phosphate remover.

Related hot-selling products:

  • HTH Super Shock
  • Baquacil Shock
  • Clorox Pool & Spa Algaecide
  • Blue Wave Phosphate Remover
  • Pool Master Pool Brush

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