What If Your Hot Tub Didn’t Need Chlorine?
You bought a hot tub for relaxation. Instead, you got a part-time job: testing pH, measuring chlorine, adding shock treatments, chasing cloudy water. Most hot tub owners spend more time maintaining their water than soaking in it.
It doesn’t have to work that way.
Royal Spa builds every hot tub with ozone generation and 24/7 circulation-filtration as standard equipment. That baseline alone keeps your water cleaner than most competitors’ best efforts. Add the IonPure copper ionization upgrade, and chlorine and bromine drop out of your routine entirely. Go one step further with Epsom Salt (something no other manufacturer’s equipment can handle), and you’re soaking in a true mineral spa. In your backyard.
How Royal Spa’s Water Care System Works
Most hot tub brands treat water care as an afterthought. Buy the tub, then figure out the chemical cocktail. Royal Spa engineered the water care into the tub itself. Here’s how the layers stack up.
Layer 1: Ozone + 24/7 Circulation (Standard on Every Royal Spa)
Every Royal Spa hot tub circulates water continuously, 24 hours a day, 7 days a week. That water passes through an ozone generator that oxidizes organic contaminants: sweat, body oils, sunscreen, dead skin cells. These are the things that make water cloudy and smelly. Ozone breaks them down before they become problems.
This isn’t an upgrade. It’s the baseline. Your Royal Spa is working around the clock whether you’re in it or not. Most competing hot tubs cycle their pumps on and off, which creates windows where water quality drops and contaminants build up. By the time you climb in, the water is already behind.
Layer 2: IonPure Copper Ionization (Available Upgrade)
IonPure is Royal Spa’s copper ionization system, available as an add-on to any hot tub in the line. It releases trace amounts of copper ions into your water continuously. Copper has been used in water treatment for centuries because of its natural properties in aquatic environments.
Here’s what changes when you add IonPure to a Royal Spa that already has ozone and 24/7 circulation: chlorine and bromine aren’t part of your routine anymore. The combination of copper ionization, ozone oxidation, and continuous filtration handles your water care without the chemicals that dry your skin, irritate your eyes, and leave that sharp chloramine smell on your skin after a soak.
Occasionally, you might add a small amount of hydrogen peroxide (H2O2) as a supplemental oxidizer. That’s it. No chlorine tablets. No bromine floaters. No chemical smell clinging to your swimsuit.
This is worth pausing on. The current article on this page (the one you may have read before) said IonPure “reduces chemicals by 50%” and that you’d “still use some chlorine but way less.” That’s true for most commercial ionization systems on most hot tubs. It’s not true for Royal Spa. When you combine IonPure with Royal Spa’s existing ozone and 24/7 circulation, the system is complete. Chlorine and bromine aren’t needed.
Layer 3: Epsom Salt (Exclusive to Royal Spa)
This is where Royal Spa separates from every other manufacturer on the market. Not by a little. By a category.
Epsom Salt is magnesium sulfate. It’s been used in wellness routines for generations because magnesium promotes relaxation and supports recovery. But you can’t put Epsom Salt in a normal hot tub. It corrodes standard equipment: pumps, heaters, jets, seals. Every major manufacturer explicitly prohibits it. Use Epsom Salt in their tub, and you void your warranty.
Royal Spa engineered every hot tub in the line to be Epsom Salt Compatible. The materials, the seals, the plumbing, all of it is built to handle magnesium sulfate without degradation. This isn’t a workaround or a “use at your own risk” situation. It’s what the tub was designed to do.
When you add Epsom Salt to a Royal Spa with IonPure, something remarkable happens. Copper ions from the ionizer. Magnesium from the Epsom Salt. You’re soaking in a copper-magnesium mineral spa. That’s not marketing language. That’s water chemistry.
Layer 4: Hot Tub Nutrients (The Complete Mineral Profile)
Royal Spa’s proprietary Hot Tub Nutrients add potassium to the mix. With IonPure providing copper, Epsom Salt providing magnesium, and Hot Tub Nutrients providing potassium, your hot tub delivers a full copper-magnesium-potassium mineral spa experience.
No other hot tub on the market can do this. Not one. The equipment can’t handle the minerals, and the water care systems can’t function without chlorine or bromine to fall back on. Royal Spa is the only manufacturer where this combination is even possible.
Why This Matters More Than “Fewer Chemicals”
Reducing chemicals by 50% is nice. Not needing chlorine or bromine at all is a different conversation.
Most hot tub brands market their ionization or mineral systems as “chemical reducers.” And that’s honest, for their systems. Their tubs still rely on chlorine or bromine as the backbone of water care. The ionizer helps, but it doesn’t get you all the way there.
Royal Spa’s system is different because the foundation is different. Ozone and 24/7 circulation aren’t add-ons here. They’re built in. IonPure doesn’t have to compensate for a tub that sits stagnant between uses. It’s layered on top of a system that’s already running clean.
That’s why the math works out differently. It’s not one technology doing all the work. It’s three systems (four, if you count the mineral additions) each handling a piece of the job so thoroughly that chlorine becomes unnecessary.
What You’ll Actually Notice
The first thing is the smell. Or rather, the absence of it. That sharp chloramine smell that clings to your skin and hair after a chlorine-treated soak? Gone. Your water smells clean. Almost neutral. You’re not breathing chemical fumes while you’re supposed to be relaxing.
The second thing is how the water feels. Mineral water feels different on your skin. Softer. Less drying. Add Epsom Salt, and the difference is immediate. Your skin won’t feel tight or itchy after a soak. If you’ve ever visited a natural mineral hot spring, that’s the comparison point.
The third thing is what you’re not doing. You’re not testing chlorine levels twice a week. You’re not buying jugs of chemicals every month. You’re not troubleshooting cloudy water on Saturday morning when you’d rather be doing anything else. Your maintenance routine drops to minutes per week.
The Positioning, Straight
Here’s how Royal Spa’s water care stacks up, from the baseline to the full mineral spa experience:
Standard Royal Spa (every tub, no upgrades needed): Ozone + 24/7 circulation-filtration. Already cleaner and lower-maintenance than most competitors’ top-tier offerings. You’ll use less chlorine than any traditional hot tub owner.
Add IonPure: Copper ionization completes the sanitation system. Chlorine and bromine drop out of your routine. Occasional hydrogen peroxide if needed. Your water care simplifies dramatically.
Add Epsom Salt (only possible in a Royal Spa): Magnesium enters the water. You’re now soaking in a copper-magnesium mineral spa. Your skin, your muscles, and your nightly wind-down all benefit.
Add Hot Tub Nutrients: Potassium completes the mineral profile. Copper, magnesium, potassium. A full mineral spa experience that exists nowhere else in the hot tub industry.
Can Any Other Hot Tub Do This?
No. And it’s not close.
No other manufacturer builds hot tubs with equipment rated for Epsom Salt. No other manufacturer offers a water care system where chlorine and bromine aren’t required. No other manufacturer can deliver a copper-magnesium-potassium mineral spa experience.
Those aren’t marketing claims. They’re engineering facts. Royal Spa has been building hot tubs in Indiana since 1981. The materials science that makes Epsom Salt compatibility possible is the same confidence that backs a 40-year structural warranty. If the components can handle what destroys competitors’ equipment, that tells you something about how they’re built.
The Cost Comparison
Traditional hot tub owners spend $300 to $400 a year on chemicals: chlorine or bromine, pH adjusters, alkalinity adjusters, clarifiers, shock treatments. That’s before you count the testing supplies and the time.
A Royal Spa with IonPure and Epsom Salt? Your ongoing costs are the Epsom Salt itself (inexpensive and widely available), occasional hydrogen peroxide, and Hot Tub Nutrients if you want the full mineral profile. You’re looking at a fraction of the traditional chemical budget.
IonPure has an upfront cost as an upgrade. Over a few years, the savings on chemicals alone more than cover it. Factor in the time you’re not spending on maintenance, and the math gets even simpler.
What About Maintenance?
A mineral water care system isn’t set-and-forget. You still check your water. You still clean your filter. You still pay attention.
What you don’t do is chase chemical imbalances. You don’t wake up to cloudy water because something spiked overnight. You don’t spend your weekends troubleshooting pH swings or shocking the tub back to clarity.
Your routine becomes simple: check water periodically, clean the filter on schedule, add Epsom Salt or Hot Tub Nutrients as desired. Minutes per week instead of hours per month. That’s not laziness. That’s what happens when the engineering does its job.
Come Feel the Difference
Reading about mineral water care is one thing. Sitting in it is another.
Visit any of our three Indianapolis-area showrooms and do a wet test. Feel the mineral water on your skin. Notice what’s missing (the chemical smell, the dry skin, the irritation). We’ll walk you through the system, show you exactly how IonPure works, and run a personalized cost analysis based on your electric rate and your usage. Your numbers, not averages.
No pressure. Come see us when you’re ready.
