10 Best Leslie's Powder Plus Shock of 2025

Main Highlights

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  73% Calcium Hypochlorite with 70% available chlorine kills bacteria, algae, and contaminants.
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  Quick action with minimal residue, wont significantly raise calcium hardness.
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  Ideal for super chlorination and routine maintenance, tackles tough algae blooms.
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  No cyanuric acid, wont raise stabilizer levels, perfect for evening use.
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  Use 9-18 oz. per 10,000 gallons for 5-10 ppm available chlorine.

Main Highlights

• 
  73% Calcium Hypochlorite with 70% available chlorine kills bacteria, algae, and contaminants.
• 
  Quick action with minimal residue, wont significantly raise calcium hardness.
• 
  Ideal for super chlorination and routine maintenance, tackles tough algae blooms.
• 
  No cyanuric acid, wont raise stabilizer levels, perfect for evening use.
• 
  Use 9-18 oz. per 10,000 gallons for 5-10 ppm available chlorine.

Main Highlights

• 
  Kills bacteria, controls algae, and destroys organic contaminants
• 
  Concentrated chlorinating granular Cal-Hypo pool shock
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  Fast dissolving
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  Low Residue
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  73% Calcium Hypochlorite

Main Highlights

Main Highlights

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  Powerful Sanitizer: Kills bacteria, controls algae, and eliminates organic contaminants for clean, clear pool water.
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  High-Strength Formula: Contains 73% Calcium Hypochlorite with 70% minimum available chlorine.
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  Fast-Acting & Low-Residue: Quickly dissolves with minimal residueperfect for quick cleanups or ongoing care.
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  Versatile Use: Great for super chlorination or routine maintenance; non-stabilized with no added cyanuric acid.
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  NOTE: This bundle will likely ship in multiple packages, which may come from different locations and arrive on separate days. Please allow an extra day or two for all items to be delivered.

Main Highlights

• 
  Kills bacteria, controls algae, and destroys organic contaminants
• 
  Concentrated chlorinating granular Cal-Hypo pool shock
• 
  Fast dissolving
• 
  70% Calcium Hypochlorite
• 
  Fast acting solution for swimming pool problems

Main Highlights

• 
  Contains 73% Calcium Hypochlorite and 70% available chlorine, the strongest pool shock available.
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  Kills bacteria, controls algae, and destroys organic/inorganic contaminants.
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  Fast-dissolving, low-residue, suitable for treating problems and routine maintenance.
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  Non-stabilized, no Cyanuric Acid (CyA), ensures clear, sanitized pool water.
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  Ideal for super chlorination, dosage: 9-18 oz. per 10,000 gallons for 5-10 ppm chlorine.

Main Highlights

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  Quick dissolving and fast acting chlorine-free oxidizer
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  For use in all types of pools and spas
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  Keeps water clear and sparkling
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  Add weekly to prevent problems
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  Eliminates non-living organic waste

Main Highlights

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  Quick-dissolving concentrated chlorinating granular
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  For use in all types of pools, spas, and hot tubs
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  Kills bacteria and algae
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  Multi-use for shocking or everyday chlorination
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  Leaves no residue or bleaching on pool and spa interior surfaces

Main Highlights

• 
  Kills bacteria, controls algae, and destroys organic contaminants
• 
  Concentrated chlorinating granular Cal-Hypo pool shock
• 
  Fast dissolving
• 
  70% Calcium Hypochlorite
• 
  Fast acting solution for swimming pool problems