Troubleshooting black algae

Troubleshooting black algae
  • Test and adjust the pH level of your pool or spa water to 7.4
  • Shock with a Kem-Tek Step 3 Shock product, at two or three times the normal shock treatment
  • Scrub black spots with wire algae brush
  • Do not operate pump for several hours; when water is calm place Black Algaecide directly over spots
  • Wait 24 hours after the shock treatment, then use any of the following: Algaecide 60% Concentrated, Green Algaecide, Phosphate Remover or Algaecide and Clarifier as part of your normal maintenance to help prevent further problems
  • Use Metal and Calcium Eliminator to prevent stains
  • For help with a specific question, you can call our free helpline at 1-800-SOS-POOL (767-7665)
Important note: Black algae can leave spores in plaster that can grow again if water has low chlorine levels. It is important to add a liquid algaecide as part of your regular maintenance routine.

Useful products for pool

Shock Quick 10

Shock Quick 10

Destroys organic contaminants

Algaecide and Clarifier

Algaecide and Clarifier

Treats and prevents algae

Useful products for spa