Combat Extra

Our original and unique algaecide is powerful to kill all the algae present. Versitale enough to be added regularly to prevent algae all season long.

Product Details


  • Fast acting
  • Formulated pH neutral
  • Non-foaming, Non-staining
  • Swim immediately after application
  • Compatible with bromine or chlorine pools


  • Destroys all resistant strains of algae
  • Additional clarifiers speed pool recovery


  • Clean filter as necessary. Follow directions on product label.
  • Adjust pH 7.2 -7.6 and Alkalinity 80-120 ppm
  • For visible algae treatment: Apply to pool 1 pound of Quick Shock, or other granular chlorine, for every 10,000 gallons of pool water. Wait 1-2 hours. Brush pool. Add Combat Extra
  • Product Dose to eliminate light to medium algae growth: Add 16 fl.oz. per 10,000 gallons. Heavy algae growth: 24 fl.oz per 10,000 gallons
  • Continuous prevention: Add 4 fl.oz. weekly
  • Always add product while pump is operating and system filtering

Available Sizes

1 qt bottle

Product Downloads

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