Natural Chemistry Calcium Increaser, 1.83 lb Bottle | 14205NCM
Natural Chemistry Pool and Spa Water Care

Natural Chemistry Calcium Increaser, 1.83 lb Bottle | 14205NCM

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SKU:
14205NCM

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About This Item

Natural Chemistry Spa Calcium Hardness Increaser - 1.83 lb Bottle

Natural Chemistry’s Spa Calcium 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.

Designed to raise calcium hardness of spa water

Prevents corrosion damage and bather irritation caused by low calcium hardness levels

Features and Benefits:

  • Raises calcium hardness in spa and hot tub water
  • Reduces cloudy water caused by low calcium levels
  • Low calcium hardness levels could cause the water to become corrosive, which may result in damage to the spa surface or equipment

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 spa circulating pump on high speed, 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 showing spa volume in gallons on vertical axis and calcium increaser amounts in dry ounces at different ppm levels from 20 to 100 ppm on horizontal axis

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Natural Chemistry Pool and Spa Water Care

About Natural Chemistry Pool and Spa Water Care

Founded in 1989, Natural Chemistry shifted the paradigm of pool care by asking a simple question: "Is there a better, more natural way?" While the rest of the industry relied heavily on harsh industrial chemicals, Natural Chemistry pioneered the use of powerful, naturally based enzymes—similar to those found in your own body—to break down organic waste.

What started as a single enzyme formula to combat scum lines has grown into North America’s leading authority on specialty pool water care. Their philosophy is built on "biomimicry"—using technologies inspired by nature to solve common pool problems like algae fuel (phosphates) and greasy buildup. By breaking down contaminants rather than just masking them, their products often reduce the need for excessive sanitizers and scrubbing. For the DIY homeowner, Natural Chemistry represents the "work smarter, not harder" approach to maintenance, delivering high-end results with eco-conscious science.

Why We Trust Natural Chemistry Pool and Spa Water Care
Pioneering Enzyme Technology: They were the first to successfully stabilize natural enzymes for pool use, allowing water to "digest" oils, lotions, and pollen naturally.

Problem-Solving Focus: Rather than generic fixes, they manufacture targeted solutions for specific headaches, such as high phosphates (Phosfree) or persistent scum lines.

Efficiency & Simplicity: Their core promise is to reduce maintenance time and effort, polishing water so it sparkles without constant manual labor.

Eco-Conscious Chemistry: By removing organic load efficiently, their products often help sanitizers work more effectively, potentially lowering the total chemical burden in the pool.

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