GLB
GLB SuperSonic Fast-Dissolving Granular Shock
Best fast-acting shock for pool owners needing residue-free water maintenance.
GLB SuperSonic Fast-Dissolving Granular Chlorine is a powerful, multi-use pool treatment designed to keep your water healthy and safe. This granular formula quickly dissolves to disinfect, sanitize, clarify, and prevent algae growth. It boasts a minimum of 70% available chlorine and is compatible with both traditional chlorine and salt water sanitizing systems. SuperSonic is easy to use, leaves no residue, and does not contain cyanuric acid, making it a convenient choice for maintaining all types of pools.
$89.00
Owner Satisfaction
4.6
/ 5
Category Rank
118
/ 1309
#118 in Pool Cleaners & Chemicals
Price vs Category Average
+31%
Above average
Net Contents
121
/ x Lb Bags
Who it's for
- Pool owners needing immediate water clarity for weekend gatherings
- Homeowners seeking a reliable solution for algae and bacteria control
- Pool maintenance enthusiasts wanting to avoid scrubbing floor residue
Who should skip it
- Owners who prefer a low-maintenance, pH-balanced water chemistry routine
- Pool owners in sunny climates wanting to minimize chemical frequency
- Families with small children or pets requiring safer storage solutions
Performance breakdown
Dissolution Speed
Granular formula breaks down rapidly to minimize downtime for swimmers.
Sanitization Potency
High 70% available chlorine content delivers aggressive, professional-grade water treatment.
Application Convenience
Pre-measured one-pound bags eliminate guesswork and simplify routine pool maintenance.
Chemical Compatibility
Versatile formula works seamlessly with both salt and traditional chlorine systems.
Water Balance Impact
Cyanuric acid-free composition prevents stabilizer buildup and keeps chemistry manageable.
Surface Versatility
Safe for all pool surfaces without leaving behind unsightly residue.
Key Specs
Net Contents
12 x 1 Lb Bags
Minimum Available Chlorine
70%
Compatible with chlorine and salt water chlorine sanitizing systems
Works with all pool surfaces
Does not contain cyanuric acid
Fast-dissolving granular formula
Chemical standard type
Shock
Form
Granules
Features
- Effective Multi-purpose: Offers sanitizing, clarifying, and algae prevention capabilities.
- Fast-Acting Formula: Designed for quick results and suitable for all pool surfaces.
- Convenient Application: Easy to use and comes in a 12-pack of 1 lb bags.
- Stable Water Chemistry: Formulated to avoid over-stabilizing pool water.
- Residue-Free Composition: Does not contain cyanuric acid, preventing residue.
- Fast-dissolving granular formula for quick action
- Multi-use: disinfects, sanitizes, clarifies, and prevents algae
- High chlorine content (minimum 70% available chlorine)
- Compatible with both chlorine and salt water pools
- Suitable for all pool surfaces
What customers say
Customers consistently praise GLB SuperSonic Granular Shock for its exceptional ease of use and rapid effectiveness. Many highlight how quickly the product dissolves, leaving no residue and simplifying pool maintenance routines. Users frequently report significant improvements in water clarity and quality shortly after application. This fast acting solution is often seen as a reliable choice for maintaining sparkling clean pools, providing a hassle free experience that delivers noticeable results. Its straightforward application and powerful performance make it a favored option among pool owners.
Know before you buy
Yes, GLB SuperSonic is fully compatible with both traditional chlorine pools and salt water sanitizing systems.
No, this formula is cyanuric acid-free, so it will not contribute to stabilizer buildup or over-stabilization in your water.
The granules are designed for rapid dissolution, allowing the treatment to get to work immediately without leaving behind residue on your pool surfaces.
Yes, the formula is suitable for all pool surfaces, including vinyl, plaster, and fiberglass.
Yes, it is a multi-purpose treatment that disinfects, sanitizes, clarifies the water, and actively prevents algae growth.
The pre-measured 1 lb bags are designed for easy application; simply broadcast the granules across the surface of the pool water according to the dosage instructions on the packaging.
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