SpaPure Calcium Hardness Increaser (16 oz)

The SpaPure Hardness Increaser is a granular product that is designed to safely raise the calcium hardness levels in your spa water. Regular use of this product will stop and prevent the corrosion of your spa's surfaces. This product is compatible with all systems including bromine, chlorine, mineral sanitizers, and biguanide.

• Safely raise the calcium hardness levels in your spa water
• Stop and prevent the corrosion of your spa's surfaces
• Compatible with all systems including bromine, chlorine, mineral sanitizers, and biguanide

NEVER mix different product together in the same bottle or pail. Add this product directly to the spa water.

1. Turn on circulation system.
2. Add 1 ounce (2 tablespoons) for every 500 gallons of water to increase the calcium hardness 10 ppm. Broadcast over the surface of the water. Spa may be used immediately after the products application.
3. Wait two hours and retest calcium hardness.

Calcium Chloride Dihydrate:100%