Spa Calcium Hardness Increaser

Brings calcium into ideal range

Natural Chemistry’s Spa Calcium Hardness Increaser is used to raise calcium hardness in spa water. Calcium hardness in spa water should be maintained between 150-250 ppm. Low calcium hardness levels could cause the spa water to be corrosive which may result in damage to the spa surface or equipment.


  • Brings calcium hardness level to an ideal range
  • Reduces cloudy water caused by low calcium levels

Instructions

Directions for use:

Read the entire label before using.

  1. Test spa water for calcium hardness level
  2. Compare test results to chart below to determine appropriate amount of product necessary to make adjustment.
  3. With the spa not in use and circulation pump operating, add required amount directly into spa water. Continue circulating water a minimum 20 minutes. Do not pre-dissolve this treatment as heat is generated when it contacts water.
  4. Retest and adjust if necessary.

Dosage Chart

All values are in grams

Spa Volume20ppm40ppm80ppm100ppm
758L21g43g85g106g
1500L43g85g170g213g
3028L85g170g340g425g

  Printable version




Instead of getting technical and trying to teach a science class explaining how enzymes work we will try to break it down more simply. Enzymes break non-living things down to smaller and smaller bits. Many non-living things are in pool and spa water; body oils, sweat, cosmetics and sunscreens to name a few.
SMARTZymes contain thousands of enzymes with the potential to break down thousands of different non-living waste products in your water.


Natural Chemistry pioneered the use of phosphate removal technology long before it was popular. High phosphate levels in pool water can create many water issues. Most people today are aware of the efforts by government agencies to limit the use of phosphates in common household products due to their effect on water. Natural Chemistry has a variety of phosphate removal products that have been proven to make water care easier.

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MSDS

Material Safety Data Sheets

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