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Calcium Hardness Increaser for Pools & Spas

Puri Tech ★ 4.0/5 · ItemOracle Score Budget

$44 USD
Price subject to change
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Puri Tech Pool Chemicals 25 lb Calcium Hardness Increaser Plus for Swimming Pools & Spas Increases Calcium Hardness Levels Prevents Surface Staining

Calcium hardness increaser to raise calcium levels, helping prevent corrosion, scaling, and surface staining. Easy to use with premix in a bucket and dosage guidance; noted for dissolving quickly and value for money

Highlights

  • Raises calcium hardness
  • Fast-acting
  • Easy premix dosing

Pros

  • Raises calcium hardness
  • Fast-acting formula
  • Easy to use and premix
  • Dissolves quickly
  • Good value for money

Cons

  • Leakage reported by some customers

Best For

  • balancing pool water
  • protecting pool surfaces from staining
  • preventing equipment corrosion
  • preparing spa water
  • pre-dosing with calcium adjustments
  • home pool maintenance

Features

  • Raises calcium hardness to protect surfaces and equipment
  • Fast-acting formula balances water to prevent low-calcium-related damage
  • Premix in a bucket and add to pool following dosage guide by pool size
  • Resealable bag provides easy storage for repeated use
  • Clear dosage chart covers pools from 2,000 to 20,000 gallons

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