How a Pool Salt Chlorinator Works  If you’ve got a backyard pool in Australia, chances are it runs on a salt chlorinator. From suburban Brisbane to coastal Perth, saltwater pools have become the go-to choice for homeowners who want sparkling water without constantly handling chlorine. But how does a salt chlorinator actually work? Let’s break it down in plain English. First Things First — A Salt Pool Is Still a Chlorine Pool! This surprises a lot of people. A saltwater pool isn’t chlorine-free. It simply makes its own chlorine using salt and electricity, instead of you adding chlorine tablets or liquid by hand. Think of it as a mini chlorine factory sitting quietly in your pool plumbing. Step 1: You Add Pool Salt Pool salt (sodium chloride) is poured directly into the pool and dissolved. Most Australian systems run at around 3,000–4,000 ppm (parts per million). Please note that when bringing in your water for testing, please take a photo of the Chlorinator control box, as each system has varying specific salt requirements. We will keep this information on record to make your water testing more accurate for your pool. To put that in perspective: The ocean is about 35,000 ppm. Your pool is roughly one-tenth as salty as seawater. That’s why saltwater pools don’t feel like the beach — they just feel softer and less harsh on your eyes and skin. Step 2: Water Flows Through the Chlorinator Cell When your pool pump is running, water circulates through the chlorinator cell — a clear housing installed in your return line. Inside that cell are metal plates (usually coated titanium). The control box sends a low-voltage electrical current through those plates. This is where the magic happens. Step 3: Salt + Electricity = Chlorine When electricity passes through salty water, it triggers a process called electrolysis. In simple terms: The salt is split apart. Chlorine is produced. The chlorine immediately dissolves into the pool water. That chlorine then: Kills bacteria Prevents algae Breaks down sunscreen, sweat, and other contaminants So instead of lugging home drums of chlorine from Bunnings, your system quietly makes what it needs while the pump runs. Step 4: The Salt Recycles Itself Here’s the clever bit. After chlorine sanitises the water, it eventually converts back into salt. That means the salt isn’t “used up” in the normal sanitising cycle. You only need to top up salt when water is lost from: Backwashing Splash-out Heavy rain overflow Evaporation top-ups That recycling loop is what makes salt systems so popular across Australia. Why Aussies Love Salt Chlorinators With our hot summers and long swim seasons, salt chlorinators make life easier. ✔ More Consistent Chlorine Levels Because chlorine is produced steadily while the pump runs, you avoid big chemical spikes and dips. ✔ Less Chemical Handling No strong chlorine smell in the garage. No storing dangerous liquids. ✔ Softer Feel Salt pools tend to feel gentler on skin, hair and eyes — especially important for kids who live in the pool over summer. ✔ Great for Automation Most modern Aussie pool setups pair salt chlorinators with timers or full automation systems. What Maintenance Is Still Required? Salt pools aren’t “set and forget” — especially in Australia’s harsh conditions. Check the Cell Calcium can build up on the plates, particularly in hard water areas like Perth or Adelaide. The cell may need occasional cleaning. Watch the pH Salt pools naturally drift upward in pH, so regular testing is important. Monitor Salt Levels Too little salt = poor chlorine production.Too much salt = potential corrosion issues. Be sure to get your water tested regularly at Rockingham Pool and Spa to keep an eye on the salt levels. Replace the Cell Most cells last 3–7 years, (usually between 4-5 years) depending on usage, water balance, and how well it’s maintained. Is It Worth It? For most Australian homeowners — absolutely. A salt chlorinator: Reduces day-to-day effort Provides steady sanitising Works well in hot climates Keeps water comfortable for swimmers It’s one of the reasons saltwater pools have become standard in Australian backyards. In a nutshell A pool salt chlorinator works by turning ordinary pool salt into chlorine through electrolysis, sanitising your water continuously and recycling the salt in the process. It’s simple, clever technology — and perfectly suited to the Australian lifestyle.