Top 10 Best Clorox Shock Extra Blue

Multifunctional pool shock with algae-fighting crystals. Creates crystal clear water. Kills and prevents green, black and mustard pool algae. Kills bacteria. Improves filter performance. Power Source Type Manual.

Multi-functional pool shock with algae-fighting crystals. Creates crystal clear water. Kills and prevents green, black and mustard pool algae. Kills bacteria. Improves filter performance. Swim-ready in 15 minutes. Reduces chlorine odor and eye irritation. Won't impact pH.

Controls algae. Kills bacteria. Prevents corrosion and scale. Removes organic contaminants for clear water. Makes water silky smooth. Protected against sunlight to last longer.

Protects against algae and bacteria for water that stays clean, clear and free of visible algae. Kills all types of pool algae and kills bacteria. Protected against sunlight to last longer. Packaging may vary.

Easy open, easy pour bottles. Clears cloudy water and removes swimmer contaminants. 4-In-1 formula won't impact pH. Improves filter performance. Treat and Swim in 15 minutes if free chlorine is between 1 to 4 ppm.

Everything you need in 1 individually wrapped tablet. Prevents algae and kills bacteria. Use in skimmer, feeder or floater. Controls pool algae.

Concentrated pool clarifier to clear dull, hazy or cloudy pool water. Creates crystal clear pool water. Combines Small particles into large ones for easy filter removal. Use weekly to maintain clear water. Great for before or after a pool party for crystal clear water. NOTE Packaging may vary.

Non-foaming formula. Effective kill and preventative treatment. Suitable for all pools.

Works with iPhone and Android. Instant, accurate customized test results. Step-by-step treatment instructions.