Cal-Up – Pure Pool Products

Protect your pool surface and equipment with Pure Pool Cal-Up, a fast-acting calcium hardness increaser made from high-purity calcium chloride. Designed to restore and maintain the right total hardness levels in your water, Cal-Up helps prevent long-term damage—keeping your pool in perfect shape all season long.

Why Pool Owners Love Cal-Up

• Quickly increases calcium hardness levels to protect your pool surface

• Prevents etching, corrosion, and equipment wear caused by soft or aggressive water

• High-purity formula dissolves fast—no residue or clouding

• Essential for concrete, tiled, or plaster pools prone to surface damage

• Helps balance water chemistry as part of a complete maintenance routine

• Available in convenient, resealable packaging for easy storage and use

Why Calcium Hardness Matters

When your pool water is too soft (low in calcium), it becomes aggressive—meaning it will draw minerals from your pool surface or equipment to balance itself. This leads to pitting, etching, and corrosion over time. Pure Pool Cal-Up prevents this by safely raising calcium levels, keeping your pool water balanced and non-destructive.

How It Works

Pure Pool Cal-Up is a calcium chloride-based compound that dissolves rapidly in water, boosting total hardness levels in just a few hours. By increasing calcium levels to the ideal range (between 200–400 ppm), it helps create stable water that won’t damage your surfaces, fixtures, or filters.

Dosage Guide

• To raise hardness by 10 ppm: Add 100g per 10,000 litres of water

• Typical application: 1–2kg for standard pools with low calcium levels

• Always test water hardness before dosing, and adjust as needed

• Broadcast directly into the deep end or pre-dissolve in a bucket before adding

Pro Tip: Add Cal-Up while the pump is running to ensure even distribution and faster dissolving.

Safe for All Pool Types

Cal-Up is safe to use in concrete, pebblecrete, fiberglass, and vinyl-lined pools. It's especially important for concrete and tiled pools, where low calcium can cause visible surface damage. Compatible with all filtration systems when used as directed.

So Simple to Use

Just measure the required amount, broadcast it directly into the pool, or pre-dissolve in a bucket of water for a gentler application. With fast-acting, low-dust granules, there’s no mess—just balanced, protected water in no time.

Why Choose Cal-Up Over Other Hardness Increasers?

• Superior purity for quicker dissolving and fewer residues

• Doesn’t cloud water or interfere with other chemicals

• Long shelf life in sealed, moisture-resistant packaging

• Trusted by pool professionals and home users alike

Why Choose Pure Pool Products?

Exceptional Value for Money
Get premium-grade calcium hardness control without the premium price tag—designed for Aussie pool owners who care about quality and value.

Australian-Owned & Family-Run
Pure Pool Products is proudly Aussie-owned, offering products made for local conditions and backed by real people who know pools.

Professional Quality, Everyday Ease
Our products are formulated for powerful performance with simple, user-friendly application—no science degree needed.

Customer-First Support
From water testing tips to dosage advice, we’re here to help make your pool care routine smooth and stress-free.

Proven and Trusted Nationwide
Join thousands of pool owners who rely on Pure Pool Products to maintain clean, balanced, and damage-free water all year round.

Safe, Reliable, and Made to Last
Pure Pool Cal-Up is tough on imbalances, gentle on your surfaces, and safe for your whole family when used as directed.

Pure Pool Cal-Up—your go-to solution for protecting pool surfaces, preventing damage, and keeping your water chemistry perfectly balanced.