10 Best Chlorine Tablets 2020

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

After analyzing 268 products, scanning 3875 reviews, spending more than 36 hours of research and speaking with our test users, we think the CLOROX Pool&Spa XtraBlue 3-Inch Long Lasting Chlorinating Tablets is the one of the Best Chlorine Tablets on the market.

CLOROX Pool&Spa XtraBlue 3-Inch Long Lasting Chlorinating Tablets – Best Overall Chlorine Tablet

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

Clorox Pool&Spa Active99 3" Chlorinating Tablets 5 lb – Best under $50

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

Clorox Pool&Spa Small Pool 1" Chlorinating Tablets 1.5 lb – Best Budget Chlorine Tablet

Clorox Pool&Spa Small Pool 1" Chlorinating Tablets 1.5 lb
  • Kills bacteria and prevents algae
  • Protected against sunlight to last longer
  • For pools up to 5, 000 gallons

Pool Brand 3-Inch Swimming Pool Chlorine Tablets

Pool Brand 3-Inch Swimming Pool Chlorine Tablets
  • Individually wrapped tablets in easy-open bags
  • 90% Available Chlorine
  • Manufactured in the USA and are EPA approved
  • UV stabilized to protect and extend the effectiveness of the tablets
  • Tablets are not diluted or blended. They leave behind no residue

In The Swim 3" Inch Pool Chlorine Tablets – Premium Pick

In The Swim 3" Inch Pool Chlorine Tablets
  • 90% available chlorine
  • 3" Chlorine Tablets are slow-dissolving and stabilized
  • 8 oz. individually wrapped tablets in easy-open bags
  • 99% Trichloro-S-Triazinetrione (Trichlor)
  • Perfect size for floaters or any automatic chlorine feeder

Kem-Tek 2815-6 Chlorinating Tablets 1-Inch Pool and Spa Chemicals

Kem-Tek 2815-6 Chlorinating Tablets 1-Inch Pool and Spa Chemicals
  • For every pool sanitization and super chlorination
  • Slow dissolving and concentrated for long lasting sanitation
  • Stabilized to reduce chlorine loss to the sun's UV rays
  • Maintains strong and steady chlorine residual
  • Economical size for pop up pools and small above ground pools

Star Plus 50-Pound Bucket of Swimming Pool/Spa 3-Inch Wrapped Chlorinating

Star Plus 50-Pound Bucket of Swimming Pool/Spa 3-Inch Wrapped Chlorinating
  • Includes one 50 lb bucket (Approximately 100 tablets)
  • For use in pools and spas
  • 99% Trichloro-S-Trianzinetrione
  • Stabilized to protect potency
  • EPA approved formula

CLOROX Pool&Spa 23000CLX XtraBlue 3" Long Lasting Chlorinating Tablets

CLOROX Pool&Spa 23000CLX XtraBlue 3" Long Lasting Chlorinating Tablets
  • Controls Algae
  • Prevents corrosion and scale
  • Removes organic contaminants for clear water
  • Makes water silky smooth
  • Protected against sunlight to last longer

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