Hth 67059 Calcium Hardness Increaser 4 Lb

Product Description

The HTH 67059 is a calcium hardness increaser formulated to raise calcium hardness levels in swimming pool water. Low calcium hardness causes pool water to become corrosive, attacking pool surfaces, vinyl linings, metal fittings, and plastic components. Adding this product brings calcium hardness into the correct range, protecting pool infrastructure and extending the service life of surfaces and equipment. Pool service professionals and knowledgeable owners apply it during routine water balancing or when a test reveals calcium hardness below acceptable thresholds. The 4-pound package is sold as a single unit.

This product is suited for use in all pool types, including concrete, fiberglass, vinyl-lined pools, and salt water systems. It is applied during regular water chemistry maintenance programs where calcium hardness testing indicates corrective treatment is needed. Residential and light-commercial pool service technicians commonly carry this product as part of a complete water balancing chemical kit.

Key Features

• Raises calcium hardness levels to protect pool surfaces from corrosive water
• Compatible with all pool types including vinyl-lined pools and salt water systems
• Helps prevent corrosion of metal fittings and plastic components
• 4-pound package suited for single-treatment or maintenance dosing
• Sold individually, one unit per order

Compatibility

Designed for use in all swimming pool types including concrete, fiberglass, vinyl-lined, and salt water pools as a calcium hardness adjustment treatment.

Installation Notes

This product is applied by a pool service professional or experienced owner as part of routine water balancing. Before adding, test current calcium hardness levels with a reliable test kit to determine the correct dose. Add the product to the pool water with the pump and filter system running to ensure proper distribution. Follow all label instructions and applicable local safety regulations when handling pool chemicals.