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SpaGuard® Calcium Hardness Increaser 12 oz bottle 42636BIO, front label

SpaGuard® Incrementador de Dureza de Calcio – 12 onzas líquidas Aumenta la dureza del calcio, Fórmula granular fácil de usar, Previene la corrosión del equipo

Precio habitual $8.99
Precio rebajado Precio habitual

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Key Features & Benefits

Raises Calcium Hardness

Label target is 100–200 ppm; below 100 ppm water can turn corrosive

Label Dosage Chart

Engineered for seamless compatibility with original mounting points for secure placement.100 gal: 1 Tbsp raises about 25 ppm; 4 Tbsp about 100 ppm

Protects Equipment

Helps keep soft water from attacking surfaces and equipment

Calcium Chloride Granules

12 oz (340 g) in a resealable bottle

Genuine SpaGuard®

SpaGuard® part number 42636BIO

Scatter, Circulate, Retest

Pump on high, run 30 minutes; do not pre-dissolve

Product Overview

  • El incrementador de dureza de calcio SpaGuard® está diseñado para aumentar los niveles de dureza de calcio en el agua del spa cuando bajan demasiado, lo que ayuda a prevenir la corrosión del equipo y el grabado de la superficie.

  • La fórmula granular o líquida se disuelve rápidamente en el agua circulante del spa y ofrece aumentos mensurables: por ejemplo, "1 cucharada por cada 100 galones aumenta la dureza del calcio en ~25 ppm".

  • Mantener una dureza de calcio adecuada (normalmente entre 100 y 200 ppm para spas) ayuda a proteger las tuberías, los chorros y las superficies, y evita la formación de espuma o que el agua se sienta “blanda”.

  • Compatible con todos los sistemas de desinfección de spa y fácil de usar: primero pruebe el agua y luego distribuya el producto mientras la circulación está en funcionamiento.

  • Ideal para spas ubicados en áreas de agua blanda o donde el reemplazo o llenado de agua ha resultado en niveles bajos de calcio.

    • 1. Test calcium hardness with an accurate test method. The label target is 100–200 ppm.
    • 2. Use the label chart for your spa's capacity. 100 gal: 1 Tbsp ≈ +25 ppm, 2 Tbsp ≈ +50 ppm, 4 Tbsp ≈ +100 ppm. 500 gal: 5, 10 and 20 Tbsp.
    • 3. With the pump running on high speed, scatter the measured amount over the water. Do not pre-dissolve; it gives off heat in water.
    • 4. Keep the pump running for 30 minutes, then retest. Measure carefully to avoid overshooting.
    • Signal word: CAUTION. May cause skin and eye irritation. May be harmful if swallowed. Contains calcium chloride.
    • May be irritating to nose and throat. Avoid breathing dust. Wear goggles or safety glasses and rubber gloves.
    • Do not mix with other chemicals.
    • Keep in the original tightly closed container, out of reach of children and pets.
  • The label sets calcium hardness at 100 to 200 ppm. Below 100 ppm, water can become corrosive and may damage spa surfaces and equipment; too high can lead to scale. Balance total alkalinity and pH as well.

    • One 12 oz (340 g) bottle of SpaGuard® Calcium Hardness Increaser granules, part number 42636BIO. Contents: product of Mexico.

Frequently Asked Questions

  • It raises the calcium hardness of spa and hot tub water to help prevent corrosion of spa surfaces and equipment.
  • The label says 100 to 200 ppm. Below 100 ppm, spa water can become corrosive and may damage surfaces and equipment.
  • Use the label chart. In a 100-gallon spa, 1 Tbsp raises calcium about 25 ppm and 4 Tbsp about 100 ppm. A 500-gallon spa takes 5 and 20 Tbsp.
  • With the pump running on high speed, scatter the measured amount over the water and keep the pump running for 30 minutes. Then retest.
  • No. The label says not to pre-dissolve it, because it gives off heat when it contacts water.
  • Yes. Measure carefully; inaccurate measuring can leave calcium hardness higher than you want, which can lead to scale and cloudy water.
  • No. It is a water balancer. Keep using your normal sanitizer and shock.
  • CAUTION: may cause skin and eye irritation and may be harmful if swallowed. Wear goggles or safety glasses and rubber gloves, and avoid breathing the dust.
  • It contains calcium chloride. The label says the contents are a product of Mexico. Net weight is 12 oz (340 g).
  • Yes. It is SpaGuard® Calcium Hardness Increaser, part number 42636BIO.

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