10 Best Pool Chemicals

After analyzing 764 products, scanning 2025 reviews, spending more than 36 hours of research and speaking with our test users, we think the Clorox Pool&Spa Shock XtraBlue 6 Pack (1 lb Bottles) is the one of the Best Pool Chemicals on the market.

Clorox Pool&Spa Shock XtraBlue 6 Pack (1 lb Bottles) – Best Overall Pool Chemical

Clorox Pool&Spa Shock XtraBlue 6 Pack (1 lb Bottles)
  • Easy open, easy pour bottles
  • Contains blue algae killing crystals
  • Kills and prevents Green, Black and mustard algae

Clorox Pool&Spa Green Algae Eliminator2 32 oz

Clorox Pool&Spa Green Algae Eliminator2 32 oz
  • Non-foaming formula
  • Effective kill and preventative treatment
  • Suitable for all pools

CLOROX Pool&Spa XtraBlue 3-Inch Long Lasting Chlorinating Tablets

CLOROX Pool&Spa XtraBlue 3-Inch Long Lasting Chlorinating Tablets
  • 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

hth 52016 Super Swimming Pool Shock

hth 52016 Super Swimming Pool Shock
  • Add every 7-days
  • Kills bacteria & algae
  • Fast acting 4-in-1 shock treatment
  • Crystal clear results in 24-hours
  • Compatible with salt systems

Clorox Pool&Spa Super Water Clarifier 32 oz

Clorox Pool&Spa Super Water Clarifier 32 oz
  • 1 ounce treats 5, 000 gallons
  • Combines Small particles into large ones for easy filter removal
  • Safe for all pool types

Clorox Pool&Spa pH Up 4 lb – Best Budget Pool Chemical

Clorox Pool&Spa pH Up 4 lb
  • Raises pH to protect equipment and surfaces
  • Optimizes sanitizer efficiency
  • Prevents Eye irritation

Pool Essentials Shock Treatment 6 Pack (13.4 oz Bags)

Pool Essentials Shock Treatment 6 Pack (13.4 oz Bags)
  • Fast-dissolving pool shock
  • Clears cloudy water and removes swimmer contaminants* (*) such as body oils, sweat, lotions and urine
  • power_source_type: Manual
  • No assembly required

Clorox Pool&Spa Chlorine Stabilizer 4 lb

Clorox Pool&Spa Chlorine Stabilizer 4 lb
  • Stabilizes chlorine to maximize sanitizer performance
  • Prevents chlorine loss from sunlight degradation
  • Enables chlorine to last longer

Clorox Pool&Spa Shock XtraBlue 12 Pack (1 lb Bottles) – Premium Pick

Clorox Pool&Spa Shock XtraBlue 12 Pack (1 lb Bottles)
  • Kills & controls green, black & mustard algae
  • Kills bacteria
  • Clears cloudy water and removes swimmer contaminants
  • Reduces chlorine odor and eye irritation
  • Improves filter performance
  • Won't impact pH
  • 1-pound bottle treats 12,000 gallons of water
  • Recyclable, resealable, easy-open, easy-pour bottles

Clorox Pool&Spa Active99 3" Chlorinating Tablets 5 lb

Clorox Pool&Spa Active99 3" Chlorinating Tablets 5 lb
  • Everything you need in 1 individually wrapped tablet
  • Prevents algae and kills bacteria. Frequency of use: twice per week
  • Use in skimmer, feeder or floater

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