Bio-Dex Knock Out Yellow Algaecide - 2 Lb - KNYA02

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The Bio-Dex Knock Out Yellow Algaecide is a granular product designed to control and prevent algae growth. The Knock Out Yellow Algaecide also works to maintain clear water in swimming pools.

  • Helps to control and prevent algae growth
  • Keeps swimming pool water clear

To remove visible algae accumulations:

  1. Brush areas affected with algae accumulations.
  2. Add 4oz (2 capfuls) of this product per 10,000 gallons close to the affected areas. For severe accumulations add 6oz per 10,000 gallons.
  3. To activate, add one of the following: 1 pound dry chlorinating compound (calcium hypochlorite or dichlorosocyanurate), 2 pounds lithium hypochlorite (35%), 1 gallon sodium hypochlorite (liquid chlorinating compound) 10-12%, 2 gallons sodium hypochlorite (liquid chlorinating compound) 5.25%, or 1 pound potassium monopersulfate per 10,000 gallons of water.
WARNING: The following product(s) can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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