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Winter Shock II 

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Winter Shock II is our popular, lithium-based winter shock treatment ideally suited for vinyl and above-ground pools. Packaged in convenient 1 lb. bags it dissolves quickly, won't cloud water, and oxidizes organic wastes.

  • Chlorinating-oxidizing treatment ideal for vinyl, painted and fiberglass pools
  • Non-clouding
  • Quick dissolving
  • Ideal for all pool surface types 

This product is part of the BioGuard Off Season Category. BioGuard Product Categories

Related Products
Winter Algicide
Winter Algicide 40
  • Economical
  • Prevents and controls algae when pool is closed for winter
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Arctic Blue® Winter Kits
Winter Kit

Each kit contains:

  • Arctic Blue® Algae Protector
  • Arctic Blue Shock
  • Winterizing instructions
  • Valuable Coupons
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Arctic Blue® Shock
Arctic Blue Shock
  • First step in an effective winterization program
  • Restores water clarity
  • Oxidizer, buffer, clarifier and flocculant
  • Ideal for all pool surfaces
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