In The Swim Sodium Dichlor Chlorine Shock
Best fast acting sanitizer for residential pool owners seeking clarity.
Keep water clear and sanitized with this fast-dissolving granular treatment. It effectively eliminates bacteria and organic contaminants without adding calcium, making it a reliable choice for maintaining balance in both pools and spas.
$23.99
at
Walmart
More Pool Shock options
Who it's for
- Pool owners seeking a fast-acting treatment that protects delicate surfaces
- Homeowners with sunny outdoor pools needing long-lasting chlorine protection
- Maintenance-conscious users wanting to avoid constant chemical adjustments
Who should skip it
- Long-term pool operators who do not regularly monitor stabilizer levels
- Budget-focused shoppers looking for the highest chlorine concentration per dollar
- Users living in humid climates with limited climate-controlled storage space
Performance breakdown
Dissolution Speed
Granules break down rapidly without leaving cloudy residue behind.
Hard Water Compatibility
Calcium-free formula prevents scale buildup in challenging water conditions.
Sanitization Potency
High active ingredient concentration delivers aggressive bacteria and algae control.
Application Ease
Simple manual dosing makes routine maintenance straightforward for pool owners.
Treatment Versatility
Effective across diverse water environments including spas and decorative fountains.
Chlorine Stability
Stabilized composition resists rapid degradation from harsh sunlight exposure.
Key Specs
Chemical Type
Granular Chlorine
Form
Granules, Powder
Weight
2.19 lbs
Available Chlorine
56%
Active Ingredient
99% Sodium-Dichlor
Application
Manual
Compatibility
Swimming pools, spas, fountains
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