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Pool Care Information
Algae Prevention & Control
PROBLEM: Black Algae
ANALYSIS:
Black algae is a blue-green filamentous algae that grows on rough surfaces of concrete and plaster pools. It usually appears as black slippery spots on the pool wall. If not checked, it grows into a dense black mat. The most common cause of black algae is a low free available chlorine level, which may be due to heavy rains, high bather loads or poor pool maintenance.
SOLUTION: Aqua Chem Algaecide Plus® - Black Algae
- Check the pH and adjust (if necessary) to 7.2 — 7.6.
- Vigorously brush away any visible algae.
- Vacuum pool surfaces and backwash to remove as much debris as possible.
- Following the label directions, add Aqua Chem Shock Plus®.
- Following label directions, add Aqua Chem Algaecide Plus (for all pool types)
- Allow algaecide to work overnight. Then brush and vacuum pool surfaces. Backwash the filter to remove accumulations of dead algae and debris.
- For major infestations, a second treatment may be needed.
- Return to normal maintenance with Aqua Chem sanitizers, shock products and balancers.
- As an algae preventative, add Aqua Chem Algaecide Plus or Algaecide Concentrate 60% per label directions as listed for preventative maintenance.
For detailed product information, go to Algaecides.
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