Treat Black Algae

  1. Remove all the debris from the pump and weir baskets.
  2. Unplug the pool cleaner.
  3. Brush the walls of the pool. Concentrate on affected areas.
  4. Backwash the filter thoroughly.
  5. Balance the pH to 7.4.
  6. Add 1 bag Sudden Shock for every 25,000 litres.
  7. Add 625ml Black Out for every 25,000 litres.
  8. Brush the affected areas regularly every couple of days.
  9. Plug in pool cleaner.
  10. Run pump as normal and monitor filter pressure. Backwash as needed.
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