What does it do?
Increases calcium hardness to prevent pool surface etching and equipment damage. When your calcium levels are low, your pool water becomes AGGRESSIVE and it will pull calcium from your surfaces and will cause calcium buildups.
How does it work?
It uses high-purity Calcium Chloride (990g/1000g) to safely boost calcium levels.
How is it applied?
Test your water, then add approximately 100g per 10,000L to raise hardness by about 10 ppm, distributing it around the pool with the pump running.
What water balance does it maintain?
It helps keep calcium hardness within the ideal range (200–400 ppm) for optimal water chemistry.
What are the additional benefits?
It’s cost-effective, made in Australia, and protects pool surfaces and equipment by maintaining proper water balance.
Dosing Multiple Chemicals or Need to Swim Soon?
We have a detailed Pool Chemical Wait Times and Chemical Interactions Guide that you can check here.
Water TechniX Calcium Up – Pool Hardness Enhancer
Water TechniX Calcium Up is a premium chemical solution designed to safely increase calcium hardness in swimming pools and spas. Maintaining the right calcium hardness is crucial to prevent surface damage, such as etching, which can lead to costly repairs.
Key Benefits:
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Prevents Etching: When calcium hardness is too low, the water can dissolve calcium from pool surfaces, leading to rough, pitted areas. Calcium Up helps prevent this damage.
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Maintains Proper Water Balance: Ensures your pool's calcium hardness level remains within the ideal range of 200-400 ppm, keeping water chemistry balanced.
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Protects Pool Surfaces: Reduces the risk of water becoming aggressive and causing damage to your pool’s surface.
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Made in Australia: High-quality product designed and manufactured locally, supporting Australian businesses.
How to Apply:
To raise calcium hardness, dissolve 100g per 10,000L of pool water. Add the solution directly to the pool with the pump running and distribute evenly. Ideal calcium hardness levels should be maintained between 175–300 ppm. Always test your water before and after dosing and avoid overdosing to prevent scaling or imbalance.
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Dosage: 100g/10,000L will raise calcium hardness by 10ppm
Water TechniX Calcium Up Details:
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Active Ingredient: 990g/1000g Calcium Chloride
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Packaging: 2kg resealable Jar
- Made in Australia
Why Choose Water TechniX:
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Cost-Effective: Save up to 50% compared to traditional pool chemicals.
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Top Quality: Designed to provide reliable and efficient results with minimal residual ingredients.
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Support Local: Proudly made and tested in Australia, supporting Aussie businesses.
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Proven Performance: Tested on all pool types to ensure optimal performance.
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Time-Saving: Maintain your pool with ease using simple and effective dosing.
Always wear safety protection and follow label instructions when handling pool chemicals. Note some photos state 4Kg bucket purely for use case examples
Download our printable 7-in-1 test strip dosage guide here to make the best use of your pool chemicals.
Aussie-made, fast-acting pool chemicals designed for DIY clarity—perfect for salt, mineral, or chlorine pools. Covers the essentials people need in their pools shock, algaecide, black spot, clarifier, flocculant, stain remover & scale control, phosphate remover, plus pH Up/Down, alkalinity, calcium hardness, and stabiliser (CYA) to balance water fast. Simple, step-by-step dosing for clear, swim-ready water without the guesswork.
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In stock at Mr Pool Man HQ i
In stock at Mr Pool Man HQ 
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Lifetime Customer Support 
30 Day Easy Returns* i
30 Day Easy Returns* 
