white 50 lb pail with red lid and handle containing GLB Large 3 inch chlorine tablets label includes pool illustration and usage details
white plastic pail with a secure lid displaying detailed red and blue warning and usage text on the back surface

GLB Large 3" Chlorine Tablets 50 lb Pail | 71236A

Regular price$273.99
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71236A
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About This Item

GLB 3" Chlorine Tablets - 50 Lb Pail

Ideal for use with floaters, feeders or skimmers

Stabilized to help prevent UV degradation from sun light

Slow-dissolving

90% available chlorine

Compatible with ozone and mineral purifier systems

These slow-dissolving tablets provide continuous disinfection. Plus, they are a stabilized product, which helps protect chlorine from sunlight. Use with floaters, feeders or skimmers.

Features and Benefits:

  • Contains 90% available stabilized chlorine
  • Start with one tablet per 10,000 gallons of pool water and add as needed to maintain 1-4 ppm free-chlorine at all times
  • For best results, shock treat pool water every other week
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About GLB

GLB Pool & Spa has been solving backyard water problems since 1956, when microbiologist Dr. Robert Stern founded the brand on a simple idea: pool care rooted in smart science, made easy enough for anyone to use. Nearly 70 years later, GLB is one of the industry's most trusted names in specialty pool chemicals — think Algimycin algaecides, the famous Super Blue clarifier, shocks, sanitizers, balancers, and cleaners that pool professionals have recommended for generations. GLB calls itself the gold standard in pool care, and the brand has the track record to back it up. Today GLB is part of the Solenis family (Innovative Water Care), a global leader in water treatment, following its years under Lonza and Sigura. For DIY pool owners, GLB means proven, professional-grade chemistry that takes the guesswork out of clear, comfortable water.

Why We Trust GLB
- Trusted specialty pool chemicals since 1956
- Founded on science by a microbiologist — formulas that work
- Home of Super Blue clarifier and Algimycin algaecides
- Backed by Solenis, a global leader in water treatment

More about Chlorine Products for Pool Water Care

Complete Your Pool Care Routine

Essential Pairing
Pool Water Balancers for Proper Chemical Balance

Chlorine is significantly less effective if pH is above 7.6. You must balance the water first.

Shop Pool Water Balancers for Proper Chemical Balance
Highly Recommended
Pool Water Testing Supplies

You cannot manage what you do not measure. Weekly testing ensures your Free Chlorine is adequate.

Shop Pool Water Testing Supplies
Pro Tip: Don't Forget
Pool Shock Treatments for Water Clarity

Shocking is required to oxidize waste and "recharge" your daily chlorine to keep it working efficiently.

Shop Pool Shock Treatments for Water Clarity

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