The ultimate home luxury of magnesium pools.
Step into a backyard oasis where the water is soft, silky and gentle on your skin. Magnesium pools trade harsh chemistry for a soothing, wellness-led swim — reduced chlorine, crystal-clear water, and a touch of luxury in every dip. Specified and serviced by John Brennan Pools, drawing on over 25 years of hands-on technical experience.
What sets magnesium apart.
Traditional pools lean on chlorine or saltwater systems to keep the water clean. Magnesium pools take a different route — using magnesium chloride, a naturally occurring mineral that's gentle on skin and eyes where chlorine can leave them tight, dry and irritated.
Magnesium is absorbed through the skin as you swim, so beyond a cleaner, safer environment you're also getting a genuine wellness benefit that conventional chemistry simply can't offer. The result is a soft, silky feel that turns every swim into something closer to a luxury experience.
Magnesium's natural flocculating properties help trap impurities, giving you sparkling, crystal-clear water with fewer chemical adjustments — less time on maintenance, more time enjoying the pool.
The health benefits of a magnesium swim.
Swimming in a magnesium pool is a holistic wellness experience as much as a refreshing one. Here's what the mineral does for body and mind.
Muscle & Joint Relief
Magnesium is a natural muscle relaxant. Soaking in it helps soothe sore muscles and reduce inflammation — a real benefit for athletes, people with arthritis, or anyone managing chronic pain.
Calm & Stress Relief
The mineral has a calming effect on the nervous system. A swim in magnesium-infused water can ease stress and anxiety, turning your backyard into a genuine retreat at the end of a long day.
Skin Health
Where chlorine strips natural oils and dries the skin, magnesium hydrates and nourishes. Regular exposure can improve elasticity and help soothe conditions like eczema and psoriasis.
General wellness information only — not medical advice. For specific skin or health conditions, check with your GP or specialist.
A more sustainable swim.
Magnesium pools use fewer chemicals than traditional chlorine systems, which means a smaller environmental footprint and less chance of harsh chemistry making its way into local ecosystems. Magnesium itself is naturally abundant — no contribution to pollution or resource depletion.
The stable water chemistry also means superior water retention and slower evaporation, so you top up less often — a real advantage where water conservation matters. And because the water carries minimal chemical content, it can often be repurposed for the garden without harming plants or soil.
It's an approach that fits neatly alongside our wider eco-friendly pool practices and water conservation guidance.
Easier to maintain, kinder on the wallet.
Magnesium's natural properties help stabilise the water chemistry, so you need fewer chemicals and less frequent testing and adjustment — lower ongoing costs, and less time spent fussing over the pool.
That superior clarity can also mean less frequent backwashing and filter cleaning, reducing wear on your pump and equipment and extending its life. And because the filtration and heating systems aren't working as hard, energy consumption — and your bills — tend to drop too.
The initial investment can sit above a conventional pool, but the savings on chemicals, maintenance and energy add up — making magnesium a genuinely cost-effective choice in the long run.
Magnesium vs the alternatives.
Three common ways to treat a pool — and where magnesium earns its place against chlorine and saltwater.
Chlorine
Effective at killing bacteria, but the strong odour, skin and eye irritation and ongoing chemical handling make it the least gentle option for many households.
Saltwater
A salt-chlorine generator makes its own chlorine for safer levels and a softer feel — but the high salt content can leave the water looking cloudy at times.
Magnesium
Still uses chlorine, but at reduced, barely-noticeable levels — paired with magnesium's therapeutic benefits, superior clarity and lower maintenance.
Magnesium systems still rely on a working chlorinator and properly balanced water — the mineral complements good chemistry, it doesn't replace it.
A magnesium pool gives you a low-chlorine, health-conscious swim that genuinely feels different the moment you step in. — John Brennan, Practice Lead
A pool that's a centrepiece.
Beyond the practical benefits, magnesium water has an aesthetic edge. Its natural flocculating properties give crystal-clear water that shimmers under sunlight — adding a quiet elegance that makes the pool a focal point of the whole yard.
Pair that with the soft, silky feel underfoot and the design is as pleasurable to use as it is to look at. Magnesium pools suit any style, from clean and minimalist to a lush tropical retreat, and come alive with natural stone, greenery, ambient LED lighting and considered landscaping.
From plan to first swim.
Whether you're building new or converting an existing pool to a mineral system, here's how the process typically unfolds.
Plan & Design
We discuss your vision, space and budget, assess the site, walk through options, and sort any permits or approvals needed before work begins.
Build or Convert
For new builds, excavation, foundation, plumbing and electrical. For conversions, we adapt your existing system to run a magnesium setup.
Add & Balance
The magnesium chloride is introduced and the water is carefully tested and balanced for optimal clarity, quality and that signature soft feel.
Finish & Inspect
Any final features — lighting, landscaping, water features — go in, followed by a thorough inspection to confirm everything is running as it should.
Already have a pool? You don't need a new build — explore our mineral pool conversion service.
Magnesium pools, answered.
Is a magnesium swimming pool completely chlorine-free?
No — a magnesium pool is not completely chlorine-free. John Brennan Pools magnesium systems use chlorine at reduced, barely-noticeable levels alongside magnesium chloride. This minimises the skin and eye irritation linked to the higher chlorine levels of traditional pools, while keeping the water safe and properly sanitised.
Can I convert my existing swimming pool to a magnesium mineral system?
Yes — most existing pools can be converted to a magnesium mineral system without a new build. John Brennan Pools adapts your current chlorinator and filtration to run magnesium chloride, then balances the water for its signature soft feel. See the John Brennan Pools mineral pool conversion service to discuss your setup.
Why does magnesium pool water feel softer than chlorine or saltwater?
Magnesium pool water feels softer because magnesium chloride is a gentle, naturally soothing mineral. Where chlorine strips the skin's natural oils and leaves it feeling tight, magnesium hydrates and nourishes as you swim, producing a soft, silky feel that is kind to skin and eyes.
Are magnesium pools more expensive than traditional chlorine pools?
Magnesium pools usually cost more to install but less to run. The upfront investment sits above a conventional chlorine pool, but the difference is typically recovered through lower spending on chemicals, maintenance and energy. Stable water chemistry means fewer adjustments and less strain on pumps and filtration.
Can magnesium pool water be reused in the garden?
Yes — magnesium pool water can often be reused in the garden. Its minimal chemical content means it can typically be repurposed for watering plants without harming foliage or soil, making a magnesium pool a water-wise, eco-friendly choice for Central Coast homes.
Related guides.
Uncompromising StandardsReady for a softer, healthier swim?
Speak directly with John Brennan — Practice Lead and Principal Technician at John Brennan Pools — about converting your pool to a magnesium mineral system. No call centres, no upselling, just considered advice on whether magnesium suits your pool and how the practice would approach the work. Because your pool is an investment, not just a backyard feature.
Written by John Brennan
John Brennan is the Practice Lead and Principal Technician of John Brennan Pools, a specialist pool and spa practice serving the NSW Central Coast since 2019. As Principal Technician, John brings over 25 years of hands-on technical experience — across QLD, the NT, and NSW — in diagnostics, clinical water chemistry and asset preservation. As Practice Lead, he sets the clinical standards every technician on the team is trained to meet, so every engagement is delivered with the same Master-Level Care.
This guide reflects the standards John sets for the practice and the advice he gives clients weighing a switch to a magnesium mineral system — from clinical water chemistry and equipment selection through to long-term asset preservation. Uncompromising standards, because your pool is an investment, not just a backyard feature.
Fully Licensed & Insured · ABN 11 202 829 652 · Contact John
A Note on Health & Wellness Claims
The wellness and skin-health information on this page is general in nature and reflects commonly reported benefits of magnesium-based pool systems. It is not medical advice and individual experiences vary.
If you have a specific skin condition, injury or health concern, please consult your GP or a relevant specialist before relying on any therapeutic benefit. Magnesium pools still use chlorine at reduced levels and require properly balanced water to remain safe and hygienic.
References informing this page include general guidance from pool industry mineral-system manufacturers and standard NSW pool water chemistry practice.
Across the Central Coast.
Magnesium conversions and full pool servicing across 90+ suburbs — from Umina to Lake Munmorah and everywhere between.