Calcium Hardness Increaser - Calcium Chloride Flakes

Calcium chloride dihydrate flakes give pool and spa engineers a practical way to correct low calcium hardness across routine service work. Dealers can order Zagosa Spa & Pool retail packs in 1kg, 2.5kg, 5kg, 10kg, 20kg and 25kg sizes, covering anything from counter sales to larger maintenance accounts. The flakes dissolve quickly and contribute calcium directly to the hardness reading. Retail-ready presentation with compliant labelling makes this a straightforward core line for resellers serving installers, contractors and water-care businesses.

• A 9 g quantity per 1000 L increases calcium hardness by approximately 10 ppm.
• Fast-soluble white flakes support efficient preparation during planned water balancing.
• Correcting soft water helps limit corrosion, recurring foam and unstable pH.
• The product is calcium chloride dihydrate with >= 77% active content.

Available formats

Available in 1kg, 2.5kg, 5kg, 10kg, 20kg and 25kg tubs.

• 1kg
• 2.5kg
• 5kg
• 10kg
• 20kg
• 25kg

What it does

• A 9 g quantity per 1000 L increases calcium hardness by approximately 10 ppm.
• Fast-soluble white flakes support efficient preparation during planned water balancing.
• Correcting soft water helps limit corrosion, recurring foam and unstable pH.
• The product is calcium chloride dihydrate with >= 77% active content.

Additional information

• Active ingredient: Calcium chloride dihydrate (CaCl2.2H2O), with >= 77% content
• Physical form: White flakes in dry form
• Appearance: Loose-flowing, water-soluble flakes
• Storage: Keep tightly closed, dry and under 30 C, separated from acids and chlorine donors.
• Shelf life: Unopened life is 36 months; after opening, 24 months when kept dry.

Balancer selection by test reading

Pairs each out-of-range reading with the Zagosa Spa & Pool balancer that corrects it. The adjustment order is total alkalinity, then pH, then calcium hardness.