Spa Pure Hardness Increaser 1 lb Calcium Chloride C002729-CS20B6
Spa Pure Hardness Increaser 1 lb Calcium Chloride C002729-CS20B6
Spa Pure Hardness Increaser 1 lb Calcium Chloride C002729-CS20B6
The Spa Pure Hardness Increaser C002729-CS20B6 is a granular calcium chloride balancer that safely raises the calcium hardness of spa and hot tub water. Spa water needs calcium in it: too little calcium leaves the water corrosive — it attacks heaters and equipment and foams easily — while the right level keeps water balanced and surfaces protected. This fast-dissolving granular formula makes hardness easy to dial in and hold.
🚩 PRO TIP: Add the Spa Pure Hardness Increaser C002729-CS20B6 while the spa is filling or the water is circulating, and brush any undissolved granules off the shell — calcium chloride releases heat as it dissolves, so do not let it sit in a pile on the surface.
PRODUCT FEATURES & SPECIFICATIONS:
- Brand: Spa Pure
- MPN: C002729-CS20B6
- UPC: 025551710581
- Type: Calcium Hardness Increaser (Balancer)
- Active Ingredient: Calcium chloride
- Form: Granular flakes
- Net Size: 1 lb (16 oz)
- Dose: 1 oz (2 Tbsp) per 500 gallons raises calcium hardness about 10 ppm
- Target Range: Calcium hardness 150 to 300 ppm
- Compatibility: All sanitizer systems, including chlorine, bromine, and mineral
FREQUENTLY ASKED QUESTIONS:
- Why does my spa need calcium hardness? Calcium hardness keeps spa water from turning corrosive. Water that is too soft pulls minerals out of surfaces and equipment and foams readily; the Spa Pure Hardness Increaser C002729-CS20B6 raises hardness into the 150 to 300 ppm range so the water stays balanced and non-corrosive.
- How much Spa Pure Hardness Increaser C002729-CS20B6 do I add? Add 1 oz (2 Tbsp) of Spa Pure Hardness Increaser C002729-CS20B6 per 500 gallons of spa water to raise calcium hardness about 10 ppm. Add it while filling or circulating, then retest before adding more.
- Can calcium hardness get too high? Yes — hardness well above 300 ppm can deposit as scale and cloud the water, especially at spa temperatures. Dose the Spa Pure Hardness Increaser C002729-CS20B6 in measured steps and retest between additions.
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