Dazzle Calcium Plus Granules 550g


Dazzle Calcium Plus is a highly refined, calcium-rich mineral designed to raise hardness levels in hot tub water. A clean, white prill, Dazzle Calcium Plus is used when calcium levels are low to raise them up. This prevents premature deterioration of tub surfaces including synthetics and vinyl and unnecessary corrosion of equipment and metal surfaces. Calcium Hardness also plays an important role in ensuring the overall mineral balance is correct, enhancing comfort, chemical efficiency and cost of maintenance.

In Stock

SKU: DAZ08039 Categories: ,


Dazzle Calcium Plus is a high-grade mineral designed to increase total hardness in hot tub water. Your hot tub behaves very much like the human body when it comes to satisfying its mineral content. Just like your body, when water has too little calcium, it will look for ways to rebalance itself and restore its mineral content. Hot tub surfaces and equipment are often the most vulnerable to your water’s aggressive search for minerals.  A low calcium hardness can damage hot tub surfaces and cause corrosion of equipment, particularly in heaters.

Quick Steps


  • Raises calcium hardness in hot tub water.
  • Low calcium hardness causes:
    • Etching of plaster, grout
    • Increased corrosion of surfaces—staining


  • Apply Dazzle Calcium Plus as needed to maintain calcium hardness level of 100-200 ppm.
  • Test when hot tub is freshly filled and monthly thereafter

How Much:

  • 10 g per 1,000 L will increase calcium hardness by 10 ppm.


  • Always balance total alkalinity and pH before adjusting calcium hardness.
  • Operate the pump with air off.
  • Divide the total amount of Calcium Plus into 3 equal applications.
  • Sprinkle each application directly into hot tub water. Note: Do not pre-dissolve, heat may be generated. 
  • Wait 6 hours before the next application.
  • Circulate for 1-2 hours.


Additional information

Weight1.8 lbs
Dimensions2.5 × 2.5 × 9.75 in