Restore Proper Calcium Hardness to Protect Spa Surfaces and Equipment

Oreq Clear Spa 104° Calcium is a professional-grade calcium hardness increaser formulated specifically for hot tubs and spas. When calcium levels are too low, spa water becomes aggressive and can cause corrosion of heaters, pumps, seals, and metal components, as well as etching of plaster or acrylic surfaces. This fast-dissolving granular formula raises calcium hardness to proper levels, helping protect spa equipment and maintain balanced, comfortable water.

Designed for routine spa water care, Oreq Clear Spa Calcium supports long-term system protection in high-temperature spa environments.

Why Calcium Hardness Matters in Spa Water

Calcium hardness plays a critical role in preventing corrosive water conditions. Low calcium levels allow water to pull minerals from metal and surface materials, leading to premature wear and damage.

Using Oreq Clear Spa Calcium helps:

• Prevent corrosion of heaters and metal components

• Protect pumps, seals, and plumbing

• Reduce surface etching on acrylic and plaster

• Improve overall water balance and stability

• Extend the life of spa equipment

Maintaining proper calcium hardness is essential for protecting your investment.

Raises Calcium Hardness Safely and Effectively

Oreq Clear Spa Calcium is designed to raise calcium hardness levels in a controlled, predictable way when used as directed. The granular format allows for precise dosing based on spa size and test results, helping avoid overcorrection that can lead to scale formation.

Proper calcium balance supports stable water chemistry and reduces maintenance issues.

Optimized for High-Temperature Spa Environments

Formulated for spas operating up to 104°F, this calcium increaser remains effective in warm water where chemical reactions occur more rapidly. It dissolves efficiently and distributes evenly with circulation running, ensuring consistent results.

Suitable for:

• Residential hot tubs

• Portable spas

• In-ground spa systems

This product is not intended for swimming pools.

Helps Balance Water and Improve Comfort

Low calcium hardness often coincides with fluctuating pH and sanitizer inefficiency. By restoring proper calcium levels, this product helps stabilize overall water balance, making it easier to maintain comfortable, clear spa water.

Balanced water reduces chemical demand and helps prevent costly equipment damage.

Easy Application for Routine Spa Maintenance

Oreq Clear Spa Calcium is simple to apply. Add the granules directly to the spa water with the circulation system running. Always test water before and after application and follow label instructions for proper dosing based on spa volume and current calcium levels.

Regular testing ensures calcium hardness stays within the recommended range.

Product Specifications

Buy with Confidence from Benchmark Pool Supply

Benchmark Pool Supply stocks professional-grade spa water care products trusted by service technicians and spa owners. Oreq Clear Spa Calcium is selected for its effectiveness, controlled action, and compatibility with modern spa systems.

When you buy from Benchmark Pool Supply, you get:

• Professional-grade pool and spa chemicals

• Reliable product sourcing

• Pool-industry expertise

• Support from a pool-focused retailer