10 Best Chlorine Tablets 2024

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

HTH 42033 Super 3" Chlorinating Tablets Swimming Pool Chlorine – ⭐ Best Overall Chlorine Tablet

42033 by HTH

  • Weight: 5 pounds
  • Dimensions: 6.6 x 7.9 x 8.3 inches
HTH 42033 Super 3" Chlorinating Tablets Swimming Pool Chlorine
  • BENEFITS: Sanitizes and protects your pool water so you can enjoy swimming in clean and clear water all season long
  • USE: Place a tab in pool skimmer, floater, or feeder for simple, DIY pool care; 1 tablet treats 10,000 gallons of water for up to a week
  • COMPATIBILITY: Vinyl-lined pools and saltwater systems
  • FEATURES: Kills bacteria and algae; Chlorinates for up to 1 week; Clarifies water; Sun protected for longer chlorine life
  • INCLUDES: One 5-lb container of Super Chlorinating Tablets for swimming pools

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

24205CLX by Clorox

  • Color: White
  • Weight: 5 pounds
  • Dimensions: 7 x 9 x 6 inches
CLOROX Pool&Spa XtraBlue 3-Inch Long Lasting Chlorinating Tablets
  • Kills bacteria
  • Kills and prevents all types of pool algae
  • Prevents corrosion, scale and stains
  • Long-lasting sunlight protection
  • NOTE: #Packaging may vary*

In The Swim 3 Inch Stabilized Chlorine Tablets for Sanitizing – 👑 Premium Pick

BLZ-5626 by In The Swim

  • Color: Multicolor
  • Weight: 55 pounds
  • Dimensions: 20 x 13 x 13 inches
In The Swim 3 Inch Stabilized Chlorine Tablets for Sanitizing
  • 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

Clorox Pool&Spa Active99 3" Chlorinating Tablets 5 lb – 💲 Best Budget Chlorine Tablet

22005CLXW by Clorox

  • Color: white
  • Weight: 5 pounds
  • Dimensions: 7.7 x 9.8 x 6.4 inches
Clorox Pool&Spa Active99 3" Chlorinating Tablets 5 lb
  • 99% Trichloro pool chlorine tablet that maintains a healthy pool
  • Kills harmful bacteria
  • Long lasting sunlight protection
  • Controls pool algae
  • Skimmer, feeder or floater applications
  • NOTE: Packaging may vary

HTH 42037 Super 3-inch Chlorinating Tablets for Swimming Pools

42037 by HTH

  • Color: Super
  • Weight: 8 pounds
  • Dimensions: 8.3 x 7.1 x 8.5 inches
HTH 42037 Super 3-inch Chlorinating Tablets for Swimming Pools
  • BENEFITS: Sanitizes and protects your pool water so you can enjoy swimming in clean and clear water all season long
  • USE: Place a tab in pool skimmer, floater, or feeder for simple, DIY pool care; 1 tablet treats 10,000 gallons of water for up to a week
  • COMPATIBILITY: Vinyl-lined pools and saltwater systems
  • FEATURES: Kills bacteria and algae; Chlorinates for up to 1 week; Clarifies water; Sun protected for longer chlorine life
  • INCLUDES: One 8-lb container of Super Chlorinating Tablets for swimming pools

Clorox Pool&Spa Active 99 3" Chlorinating Tablets 12 lb

22412CLXW by Clorox

  • Weight: 12 pounds
  • Dimensions: 6.3 x 8.5 x 11.5 inches
Clorox Pool&Spa Active 99 3" Chlorinating Tablets 12 lb
  • 99% Trichloro pool chlorine tablet that maintains a healthy pool
  • Kills harmful bacteria
  • Long lasting sunlight protection
  • Controls pool algae
  • Skimmer, feeder or floater applications

HTH 42031 1-inch Chlorinating Tablets for Swimming Pools

42031 by HTH

  • Weight: 5 pounds
  • Dimensions: 5.9 x 5.9 x 10 inches
HTH 42031 1-inch Chlorinating Tablets for Swimming Pools
  • BENEFITS: Sanitizes and protects your pool water so you can enjoy swimming all season long; kills bacteria and algae with built-in algaecide
  • USE: Place tabs in pool skimmer, floater, or feeder for simple, DIY pool care
  • COMPATIBILITY: Vinyl pools and saltwater systems, smaller type pools
  • FEATURES: Easy to use; Dissolves slowly for a steady application of chlorine to your indoor or outdoor pool for up to a week; sun protected
  • INCLUDES: One 5-pound pail of Chlorinating Tablets for swimming pools

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

KTK-50-0016 by Kem-Tek

  • Weight: 1.5 pounds
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

HTH 42032 Super 3-inch Chlorinating Tablets Swimming Pool Sanitizer

42032 by HTH

  • Weight: 0.38 pounds
  • Dimensions: 0.8 x 3 x 3 inches
HTH 42032 Super 3-inch Chlorinating Tablets Swimming Pool Sanitizer
  • BENEFITS: Sanitizes and protects your pool water so you can enjoy swimming in clean and clear water all season long
  • USE: Place a tab in pool skimmer, floater, or feeder for simple, DIY pool care; 1 tablet treats 10,000 gallons of water for up to a week
  • COMPATIBILITY: Vinyl-lined pools and saltwater systems
  • FEATURES: Kills bacteria and algae; Chlorinates for up to 1 week; Clarifies water; Sun protected for longer chlorine life
  • INCLUDES: One 25-lb container of Super Chlorinating Tablets for swimming pools

Kem-Tek 177 1-Inch Chlorinating Tablets for Pool and Spa

KTK-50-0017 by Kem-Tek

  • Weight: 3.99 pounds
Kem-Tek 177 1-Inch Chlorinating Tablets for Pool and Spa
  • The most convenient effective and easiest form of pool 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
  • Manufactured to resist crumbling

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