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Natural Hot Tub Sanitizing Treatment

Discover Your Hot Tub without the Overwhelming Chemicals and Re-Experience How Good it Can Feel.

iONRx Promise: Spa Water You Can Use Every Day with the Fewest Chemicals Possible

  • Perfect for people with sensitive skin. Eliminate rashes, dry, itchy skin, etc.
  • No chemical smells. No funky smells. Just crystal clear water.
  • Add 4 oz. per 100 gallons and maintain tap water levels of chlorine.
  • Works with ALL types of hot tubs and spas, including and swim spas and inflatable hot tubs.
  • Not compatible with Bromine or enzyme treatments. Will work in any hot tub having used bromine and/or enzymes, but those will need to be drained and refilled.
  • Eliminates the shock, bromine, enzymes, stain, scale, and almost all of the chlorine (ultra low-level is required).

Tap water levels of chlorine make iONRx the closest option to a non-chlorine hot tub available. This is the best hot tub treatment for people with sensitive skin and other issues like coughing, sneezing, asthma, skin irritation and more. Try it today – Satisfaction guaranteed or your money back!

Tired of feeling like a chemist just to enjoy your hot tub? Try iONRx and forget about fiddling endlessly with chemicals. 

If your skin gets irritated from chlorine or bromine, or if you have sensitive skin, chemical allergies, asthma or other sensitivities, then iONRx is for you! If chlorine makes your skin itchy, try us and you’ll never look back.

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Our Goal: Healthy Water For The Perfect Soak

Our goal is a better hot tub chemicals to make hot tub water as close to 100% natural with as few chemicals as possible while still being safe and sanitary. We looked to a natural and established mechanical process for treating water with Copper ions that has been used in places like hospitals and were water treatment is crucial. While great for industrial applications, the mechanical process isn’t right for at-home spas and pools. We patented a process that harvests those ions and stably suspends them in an all-natural solution that we can ship to your door eliminating the expensive and complicated mechanics. When iONRx is added to balanced water that has tap water levels of chlorine, the result is the easiest hot tub maintenance with the fewest chemicals possible. iONRx and tap water levels of chlorine must be maintained. Typically, maintenance is done on a weekly basis and is based on usage. Many people can reduce the amount of iONRx needed after the first 6-8 weeks. Testing kits are available.

Our patented two-stage, ultra-low chlorine sanitizing treatment requires 4 oz. of iONRx per 100 gallons along with 1-2 chlorine tabs for the most reliably safe, enjoyable, and clean hot tub water you’ve ever experience. We love hot tubs but not the hot tub chemical feel, smell, or what they do to our bodies.

Used commercially by spa professionals, hospitals and sports teams for over 10 years and now available for residential spas. Satisfaction guaranteed

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Customer Reviews

Patented two-stage, ultra-low chlorine hot tub sanitizer treatment requires 4 oz. of iONRx per 100 gallons along with 1-2 chlorine tabs for the most reliably safe, enjoyable, and clean hot tub water you’ve ever experience. We love hot tubs but not the hot tub chemical feel, smell, or what they do to our bodies.

iONRx is not compatible with bromine or enzyme treatments but iONRx is compatible with ALL hot tubs that have used bromine or any other system. Hot tubs with bromine and/or enzymes will need to be drained and refilled.

The Only Natural Sanitizing Treatment for Hot Tubs. Soak Longer and Like Never Before.


Hot tub chemicals especially at ultra high levels required in hot tubs, like Bromine and Chlorine, are harsh and can cause health issues like asthma, rashes, itching, tight skin and other problems. Many people have senisitivies to pool chlorine and get irritated skin, rashes or itchy from chlorine.  Through the use of our patented technology, we’re able to change hot tub sanitizing and remove the majority of those chemicals. Even the red/dry eye and faded suits are the result of soaking in excessive amounts of hot tub chemicals and toxic fumes. Bromine is a dangerous, toxic chemical and so are the large quantities of chlorine previously associated with pools and spas. You can smell it coming off of them!!

all natural water chemical sanitizer

There’s a BETTER, ALL NATURAL WAY. Make your hot tub the most natural, enjoyable body of water you’ll ever experience with less work and less chemicals.

Hot Tub Chemical Kits Available

We have several hot tub kits with what you need to switch to iONRx or to test iONRx once you’re using it! Switching or starting fresh is very easy. Just start with balanced, shocked water, add 4oz of iONRx for every 100 gallons and tap water levels of chlorine. Copper, unlike other chemicals, does not evaporate but builds up over time. It’s one of the things that keeps your water especially safe and clear. Once you’ve been using iONRx for 4-5 weeks we do recommend getting a copper test kit to ensure you’re in safe areas. Many people can even cut back on how much iONRx they’re using after the 4-5 week period. After all, we want as little hot tub chemicals as possible! We built something so where over time less can truly be more!

The iONRx® Advantage

No more burning eyes, itchy or tight skin, rashes, coughs or any bad reactions

You can enjoy your hot tub and not have the sensation of burning eyes or any of those other bad reactions like rashes or burning skin. This is all the result of soaking in excessive amounts of chemicals and toxic fumes. The truth is that dry, itchy skin and the bad reactions that can occur are all caused by chlorine/bromine exposure. Bromine is a dangerous, toxic chemical and so are the large quantities of chlorine previously associated with pools and spas. You can smell it coming off of them!! But THERE’S A NEW WAY WITH iONRx.

Stabilizes pH

By reducing the use of chemicals and levels of bromine and chlorine in your hot tub, iONRx keeps the pH levels in your water stable.

Safe for Pets and Plants!

When we say harmless, we mean it! Our eco-friendly formula is the best hot tub chemical for sensitive skin and keeps everything you love safe and sound.

Low maintenance

Simply apply iONRx® once a week! Compare that to other chlorine and non-chlorine shock tablets that need to be added 5X a week.

Works great in all weather conditions

Our high-temperature formula is not affected by changing weather conditions and is specially formulated for the high temperatures typically used in hot tubs.


You can spend more time relaxing in your hot tub or spa as iONRx® reduces the levels of chlorine and eliminates the use of bromine completely. Both are very corrosive and can lead to seals and equipment failing at a much faster pace. If you have an indoor hot tub or swim spa, you will notice that chlorine off-gassing is eliminated which will drastically or completely eliminate corrosion of household components, such as switches and fixtures. Likewise, iONRx® is the best hot tub chemical for blowup or inflatable hot tub.

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Did You Know?

  • iONRx® is used by municipalities, hospitals and pools across the country.
  • iONRx® has been used commercially for over a decade and is now available for residential hot tubs.
  • iONRx® has received CAT IV clearance from the EPA, meaning that it is considered as safe as drinking water.
  • Bromine and chlorine can cause asthma, bronchitis, and hair and skin damage.
  • 60% of chemicals that come in contact with your skin will go directly into your bloodstream.
  • Bromine and high levels of chlorine are corrosive to hot tub and spa equipment.
  • When the pH goes higher, which occurs in most hot tubs, chlorine becomes almost totally ineffective.
  • By using Free Ionic Copper in our solution, your spa will stay sanitized longer.

How Do I Balance My Hot Tub Water?

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My water looks clear, so what’s the problem? It’s what you don’t see that can be dangerous

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“No eye or skin irritation, no bromine smell, and best of all no need to shower after!”
– Cheri G.

Why Use iONRx®?

Because hot tub maintenance shouldn’t mean handling large amounts of harsh, toxic chemicals that affect your health. iONRx® is a patented solution that gives you the only non-toxic, water treatment solution that uses a Natural Antibacterial Agent to sanitize your water and reduce the use of toxic chemicals such as of chlorine and bromine in your hot tub by 90%. (We actually recommend never using bromine.)

iONRx® has been given CAT IV designation from the EPA for being NON-TOXIC and is considered as safe as drinking water. Plus, since you only have to apply it once a week, iONRx® is highly cost-effective compared to other spa chemicals you buy.

Cleaner, safer water without spending a fortune, what’s not to like?

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What is Free Ionic Copper?

Free Ionic Copper is a natural and highly-effective antibacterial agent. Why do they call it “Free?” Because it is not bound to any other elements and is “free” to aggressively seek out and effectively kill a wide variety of bacteria compared to every other form of copper and copper-based product. Since it’s just copper is free of nasty chemicals, you don’t have to worry about your sensitive skin, making it the best hot tub option! Learn more about the what makes iONRx® different:

The iONRx Difference

“The water is clearer, the smells are gone, my skin doesn’t itch anymore, and it’s easy!”
– Kim S.

Over 10 Years of Safe Water Treatment

iONRx® has been sold commercially for over 10 years to local pool builders and maintenance companies throughout Southwest Florida. In 2016, George and his wife noticed that their daughter had developed hives and was itchy after playing in a hot tub. To prevent the allergic reactions, George altered the AquaCop formula for warm water applications for hot tubs and iONRx® was developed!

About iONRx®

Our mission is to give you an innovative, natural water treatment product that provides a safe, long-lasting, enjoyable experience every time you get in your hot tub or spa. Our team knows the hassle and time constraints that go into everyday hot tub maintenance, not to mention that the most popular way to do it is to use harmful levels of chlorine and chemicals. iONRx® has been used commercially for over a decade but is now available for residential hot tubs.

The problem is that most people are unaware of what they’re putting in their hot tub and don’t think about the consequences. Many people get allergic reactions or other illnesses from excessive chlorine and bromine exposure. Not to mention, high levels of both can cause swimsuits to smell and fade, and cause your skin feels like it’s shrink wrapped every time you get out.

At the end of the day, a hot tub is meant to be relaxing and enjoyable, not dangerous to our health. This is what drove us to create iONRx®. We gathered a group of water treatment experts and scientists to create a product that reduces the use of all these toxic chemicals and gives you the peace of mind knowing there is a natural, non-toxic hot tub water treatment product. It’s time you stop wasting your money on hot tub treatment that is toxic to your health and sometimes ineffective! Switch to iONRx®, the natural hot tub maintenance solution. True innovation in hot tub treatment has finally arrived!

“The Starter Kit was easy to use and really useful to get my new hot tub up and running.”
– Rosellen G.

iONRx® Powered by AquaCop

Natural | Eco-Friendly | Low Maintenance | Harmless on Skin and Eyes | Zero Odor

Imagine relaxing in your hot tub without smelling or soaking in harmful chlorine or bromine gas, having your swimsuit smell terrible, or immediately having to shower right after you get out. Worse yet, the itching, sneezing or coughing you can get from bad reactions.

Our patented solution, iONRx® is the first natural eco-friendly, non-toxic hot tub sanitizing solution that makes water maintenance easier than ever before. If you are looking for the best chemical for hot tubs, trust in iONRx® to keep your spa naturally clean.

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