Freshwater Pools vs. Saltwater Pools

Understanding the Key Differences

When moving beyond traditional chlorine pools, the conversation often turns to saltwater systems. They've gained immense popularity as a gentler alternative. But another innovative option is emerging as a superior choice for many homeowners: the Freshwater pool. While both are steps up from heavy chlorine use, understanding the distinct technologies and their outcomes is crucial. Each type offers unique benefits and challenges. Let's explore the differences between saltwater and freshwater pools.

How They Work: A Tale of Two Technologies

The core difference lies in the sanitation method. A saltwater pool isn't chemical-free. It works by dissolving salt in the water, which then passes through a salt chlorine generator. This unit uses electrolysis to convert the salt into chlorine. In essence, a saltwater pool is simply a chlorine pool that produces its own chlorine and as such need all of the normal chemistry requirements managed by your local pool shop to give optimum performance. This is why it's often described as feeling "softer"—the chlorine level is typically lower and more consistent than in a manually dosed pool.

A freshwater pool takes a completely different path. It minimises the use of chlorine and salt altogether. Instead, it relies on a multi-faceted approach using advanced filtration, and ozone generators. These technologies work in harmony to oxidise contaminants and kill bacteria, creating water that is pristine without relying on a constant salt-to-chlorine conversion process.

Comparing the Experience: Feel, Health, and Maintenance

Both systems aim for a more pleasant swimming experience than a high-chlorine pool, but they achieve it differently.

  • Water Feel and Health: Saltwater is gentler on skin and eyes than traditional chlorine, which is a major advantage. However, it's still a saline solution. Swimmers can sometimes feel the salt, and it can still cause minor irritation during very long swims. Freshwater, on the other hand, lives up to its name. The water is soft, silky, and neutral. It truly feels like swimming in a natural spring, making it the ideal choice for those with severe sensitivities, asthma, or skin conditions like eczema. You can enjoy water that feels soft on your skin and eyes without any saline aftertaste or residue.

  • Maintenance and Cost: Saltwater pools are celebrated for their low daily maintenance. You don't buy, and hand add chlorine daily. However, super chlorination with liquid chlorine is still required at times throughout the year and for every hour the system operates the water becomes more alkaline requiring regular addition of acid to balance ph.  Most experts also recommend addition of a sunscreen to reduce evaporation of chlorine. The salt chlorine generator is a substantial upfront investment, and the cell itself is a consumable item that needs periodic replacement, which can be expensive. The salt can also be corrosive to certain pool materials and nearby landscaping over time.  Also the chloramines produced by the chlorinator reduce the life of heat retaining pool covers significantly.
    Freshwater pools also offer very low day-to-day maintenance, freeing you from the cycle of constant adjustment. The initial investment can be comparable or higher than a salt system, depending on the technology chosen. However, ongoing costs are minimal, and you avoid the long-term corrosive effects of salt on your pool equipment and surrounds. The water is so pure you can even recycle it directly onto your garden or into waste/grey water tanks as are required in Brisbane.  Ozone neautralises chloramines thereby protecting pool covers.

The Verdict: Which Pool Treatment is Right for You?

Choosing between a saltwater and a Free Heat freshwater pool depends on your definition of the ultimate swimming experience.

  • Choose a saltwater pool if you want a low-maintenance upgrade from a traditional chlorine pool and don't mind the saline content or the eventual cost of replacing the generator cell and greater cost of monthly consumables.

  • Choose a Free Heat freshwater pool if your goal is the most natural, health-conscious, and luxuriously soft water possible. It's for the homeowner who wants a system built for Australian pools and conditions that delivers a truly chemical-minimised experience. It's the choice for those who want to swim without the harsh chemical feel and enjoy water that is as kind to their bodies as it is to their backyard environment.

Ultimately, a Free Heat freshwater pool represents the pinnacle of swimming pool water quality, offering an unmatched, pure swimming experience that redefines what a backyard pool can be.