GLB Calcium Hardness Up, 15 lb Bag | 71251A
GLB

GLB Calcium Hardness Up, 15 lb | 71251A

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SKU:
71251A

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About This Item

Use calcium hardness up to increase water hardness levels, help prevent equipment and surface corrosion as well as minimize foaming.

Features and Benefits:

  • Calcium hardness levels should be maintained at 150-250 ppm
  • One pound increases calcium hardness 10 ppm in 10,000 gallons of water
  • Compatible with chlorine, bromine, mineral purification systems, salt water chlorine and ozone sanitizing systems
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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

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