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No, you’re not dreaming. EcoOne rebranded! Same great products with a fresh new look.

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Why EcoOne?

Spa Care Guide

FAQs

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Calcium Hardness Increaser

EcoOne® Calcium Hardness Increaser is an all-natural, eco-friendly, granular powder that works to gently increase your spa’s calcium hardness and prevents corrosion, etching, and staining of your spa due to low hardness levels. Our simple to use hardness treatment helps effectively maintain a proper chlorine balance, reducing the overall acidity of your water, and helping protect your spa’s plumbing, heating, and filtration equipment. 100% free of chlorine, phosphates, and other harsh irritants, Calcium Hardness Increaser will get your spa to a skin soothing hardness while protecting your equipment without all of the nasty chemicals that lead to itchy skin and red eyes.

Ingredients: Calcium chloride.

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$19.95

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100% Human Safe

Totally Earth-Friendly

Never Animal Tested

Fully Biodegradable

Free of Harmful Preservatives

Free shipping on orders over $40

Fully recyclable packaging

Made in the USA

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Daily sanitizer and shock treatment combo.

Perfectly Balanced Water

Increase calcium hardness to prevent corrosion, etching, and staining of your spa.

Safe for Your Skin

Using a proprietary blend of natural and biodegradable ingredients we never use chlorine, phosphates, or other irritant chemicals that can cause itchy skin or red eyes.

No More Cloudy Water

Calcium Hardness Increaser gives you naturally clean, clear, and balanced hardness water that feels better and keeps your spa in tip-top condition.

How to use EcoOne Calcium Hardness Increaser

Before beginning, ensure your pumps are running and water is circulating.

Step 1:

Test the Total Hardness using test strips or your preferred method.

Step 2:

If Total Hardness is less than 250 ppm, adding one ounce (two tablespoons) of EcoOne Calcium Hardness Increaser will increase the hardness by 10 ppm for every 500 gallons of water.

Step 3:

Allow the water to circulate for several hours and re-test.

Step 4:

Repeat this procedure until Total Hardness is in the correct range (around 250 ppm).

Calcium Hardness Increaser FAQs

What exactly is Calcium Hardness (Total Hardness) in water?

Total Hardness is the measurement of the mineral concentration (commonly calcium and magnesium salts) in a water sample expressed as calcium carbonate, in milligrams per liter or parts per million (mg/L or PPM).

What is the correct Calcium Hardness (Total Hardness) level for my spa or hot tub?

Calcium Hardness (Total Hardness) can vary from 0 to 1000+ ppm Calcium Carbonate. However, the optimal level for hardness is 250 ppm Calcium Carbonate.

Why is Calcium Hardness (Total Hardness) important?

Calcium hardness is important in spas and hot tubs because it maintains a proper water balance by preventing equipment corrosion, etching, and staining from low hardness levels. While improving the overall comfort by making the water feel smoother and pleasant to the skin. It also balances the chemical efficiency of our other EcoOne products to work synergistically.