SpaPure Calcium Hardness Increaser bottle raises calcium hardness to prevent corrosion and protect spa surfaces

SpaPure

SpaPure Calcium Hardness Increaser 16oz (4 Pack) – Safely Raise Spa Water Calcium

High-performance patio lawn and garden made for confident daily results

$34.41

3 shoppers currently have this item in cart.

Low stock: only 5 left in inventory. Add to cart before it's gone.

Shop Pay installment options may appear at checkout where eligible.

Free shipping Secure checkout 100% refund eligible
Bundle & save Buy 2 and save checkout time

Premium patio lawn and garden quality selected for United States (USA) customers.

Routine pack Build your routine pack (3)

Fast dispatch with always-free shipping and secure checkout on every order.

Free shipping

i

Free shipping on every order. Fast dispatch, tracked delivery, and secure checkout included.

Easy returns

i

Simple return flow and responsive support for eligible items.

Peak-demand shipping delays

i

During high demand, deliveries may experience short carrier delays. Tracking updates remain active for every order.

24/7 customer support

Questions before checkout? Our team is available and ready to help.

Return & RefundEasy returns and policy details Shipping PolicyDelivery process and tracking info
Share

Why customers choose PatioZora Garden

Overview

SpaPure Calcium Hardness Increaser is a granular formula designed to safely raise the calcium hardness in your spa water. When calcium levels are balanced, the water environment feels steadier and surfaces stay smoother, helping to reduce the risk of surface wear over time. This product is compatible with all common sanitizer systems, including bromine, chlorine, mineral sanitizers, and biguanide.

With the 4 pack included, you have a convenient supply for ongoing maintenance across seasons. A little goes a long way, and regular use supports a resilient spa environment, making your soaks more enjoyable whether you are winding down after a long day or inviting friends for an evening soak.

Key benefits

  • Safely raises the calcium hardness in spa water
  • Helps stop and prevent corrosion of spa surfaces and equipment
  • Compatible with bromine, chlorine, mineral sanitizers, and biguanide
  • 4 Pack provides ongoing maintenance and value

How to use

  • Test calcium hardness with a reliable test kit and target the recommended range for your spa
  • Dose gradually, adding small amounts while the spa pump is circulating
  • Re-test after dosing and adjust as needed to approach the target range
  • Follow label directions and avoid overdosing to keep water balanced

What you may notice

As calcium hardness rises to balanced levels, you may experience steadier water feel, reduced risk of rough surfaces, and improved protection for spa walls and components. Regular maintenance with SpaPure can support clearer water and consistent performance during regular use.

FAQ

Q: What is SpaPure Calcium Hardness Increaser used for?

A: It safely raises calcium hardness in spa water to reduce corrosion risk and protect surfaces, compatible with multiple sanitizers.

Q: How should I use SpaPure Calcium Hardness Increaser?

A: Test your water, add gradually per label directions, re-test, and adjust as needed for the target range.

You may also like