Frequently Asked Questions
Real questions from real customers.
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pH is a scale from 0 to 14 that measures how acidic or alkaline a solution is, with 7 being neutral. Water with a pH above 7 is often marketed as "alkaline" or "healthy," but pH by itself doesn't tell you why a given water might be beneficial. What matters is why the pH is elevated, not the number alone.
Bubbling HydrOxy through water does raise its pH, but it's a common misconception that this happens because of the hydrogen itself. Molecular hydrogen (H2) is pH-neutral; it doesn't carry a charge that would shift pH one way or the other. The actual cause is ExW, the Electrically Expanded Water component of HydrOxy, which carries extra electrons into the water. It's that surplus of electrons, not the added hydrogen, that pushes the pH up.
This distinction is exactly why a higher pH number by itself doesn't tell you whether water is genuinely more healthful. Ionizer-style alkaline water machines raise pH by concentrating minerals already present in tap water. That's a different mechanism entirely, and it doesn't carry the same benefit. In controlled comparisons, researchers found that when the pH of hydrogen-rich water was neutralized while the hydrogen was left intact, the health benefits remained. When the hydrogen was removed but the pH was kept elevated, the benefits disappeared. That result points to the hydrogen (and the electrons that come with ExW) as the meaningful factor, not the pH reading itself.
One other detail worth knowing: pure distilled water isn't automatically "neutral" in the electrical sense people sometimes assume. Being free of dissolved solids doesn't mean a water sample carries no charge; most distilled water actually tests as slightly positive ORP (meaning it's a bit electron-deficient) rather than neutral. This is part of why bubbling HydrOxy through distilled water is meaningful: it's not just adding hydrogen, it's shifting the water's electron balance in a healthful direction.
Learn more about ExW on the Research page.
Some devices on the market are designed to resemble the AquaCure in appearance, but appearance isn't the same as engineering. Safety features like maintaining a wide margin below the 4.7% combustion threshold, using electrode materials and voltages that avoid degradation over time, and keeping impurities contained inside the machine rather than in the output gas all come from specific design decisions. A similar-looking device doesn't necessarily include those decisions.
When evaluating any hydrogen device, worth checking for: what electrolyzer technology it uses (membrane-free vs. PEM/SPE), what safety margin it maintains below the combustion threshold, what the electrodes are made of and how long they're rated to last, and whether the manufacturer can speak to independent testing of the gas output.
What to look for when considering the purchase of any hydrogen technology
Not entirely. Brown's Gas, also called HydrOxy, requires a membrane-free electrolyzer design. That design is what allows Electrically Expanded Water (ExW) to form, which is the component that distinguishes HydrOxy from plain hydrogen and gives it its additional therapeutic properties.
Some hydrogen devices use a different technology (often called PEM or SPE) that relies on a membrane between the electrodes. That membrane structurally prevents ExW from forming. Those machines can still produce hydrogen gas, and some are marketed using the term "Brown's Gas" or similar language, but by design, they aren't capable of producing the full HydrOxy mixture.
When evaluating any hydrogen technology, the presence of ExW, not just the volume of hydrogen produced, is the meaningful distinction to look for.
Learn more about HydrOxy on the Research page.
If it didn't ignite while the machine was set to 100%, you're fine. There are no after-effects from inhaling a higher hydrogen concentration than intended, because any hydrogen your body doesn't use is simply exhaled. There's no toxic limit to HydrOxy, only a combustion limit.
The real risk at high concentrations isn't a health risk, it's a combustion risk: a static spark, even one that reaches the outside of a hose or jar, can ignite gas that's built up inside. This is uncommon. Across more than a decade of AquaCure and predecessor machines in use by thousands of customers, only a small handful of ignition events have been reported, and in each of those cases the hydrogen concentration involved was low enough that the event was contained to a hose or jar, with no one hurt.
If you've inhaled at a higher setting than you meant to and nothing ignited, there's nothing to worry about health-wise. Just dial the setting back down for your next session.
No. There's a threshold, around 2% hydrogen concentration in your intake breath, above which additional hydrogen doesn't provide additional therapeutic benefit. Below that threshold, you get comparatively little benefit; above it, up to the 4.7% combustion threshold, you're in a safety margin rather than a benefit margin.
This matters because some marketing in the hydrogen space implies that more hydrogen means more results, sometimes as a way to justify a higher-output (and higher-priced) machine. In practice, once your blood is saturated, your body simply exhales what it doesn't use. Getting enough matters. Getting more than enough doesn't add anything beyond that point, and it also brings you closer to the combustion threshold without a corresponding benefit.
The practical takeaway: adequate, consistent daily use matters more than maximizing gas output.
Hydrogen becomes combustible above a 4.7% concentration in air. The AquaCure is engineered to keep hydrogen concentration well below that threshold during normal, directed use, and it includes multiple built-in safety features specifically designed to maintain that margin.
That said, HydrOxy is a combustible gas, and it's worth treating it with the same everyday care you'd give any flammable substance. A static spark, even one that reaches the outside of a hose or jar, can ignite gas that's built up inside. Reported incidents are rare. Across more than a decade and thousands of machines in use, only a handful of ignition events have ever been reported, and in each case the hydrogen concentration involved was low enough that the event stayed contained to a hose or jar, with no injuries.
Following the setup instructions (proper ventilation, avoiding sealed containers of gas, keeping the machine grounded) is what keeps that safety margin intact.
No. Independent laboratory testing of AquaCure's gas output, and of the water produced by bubbling HydrOxy through it, confirms no hexavalent chromium is present.
The question comes up because the AquaCure's electrodes are stainless steel, which contains chromium, and some people assume that electrolysis could convert that chromium into its hexavalent (harmful) form. In practice, that conversion requires conditions the AquaCure's design doesn't create; specifically, very high temperatures and amperage densities well beyond what a properly operating electrolyzer reaches. The AquaCure is built to keep amperage density low, which is also why the electrodes are engineered to last for decades rather than degrade.
Any impurities that are present in the water used tend to stay in the electrolyzer rather than travel out with the gas, since only the hydrogen, oxygen, and ExW leave the machine. Lab testing backs this up directly: the spectrographic analysis of AquaCure's output gas shows no trace of hexavalent chromium.
Yes, there's a small amount of lye (sodium hydroxide) inside the AquaCure. It works as the electrolyte, the catalyst that makes electrolysis possible. It stays inside the machine and is not something you touch or inhale during normal use.
Lye has a reputation problem online that outpaces the actual risk. It's one of the most common compounds in household use, showing up in items like drain cleaner and oven cleaner, usually at much higher concentrations than what's in the AquaCure. It's also naturally occurring: rainwater running through wood ash after a forest fire produces the same compound.
The AquaCure is designed so that only pure gas leaves the machine. The Humidifier stage adds a further layer of protection by trapping any residual lye before the gas reaches you. If you want to verify this for yourself, an inexpensive TDS (Total Dissolved Solids) meter will show that dissolved solids in your drinking water bubbler don't rise meaningfully over time. Note that the ExW component of HydrOxy does add some electrons to the water, which will cause a small, expected rise in TDS. That's not lye.
The short version: lye is a normal part of how the AquaCure generates HydrOxy, it's contained by design, and the concentration involved is comparable to what's already in many household products.
HydrOxy is safe to inhale when used as directed. The AquaCure® is engineered to keep hydrogen concentration well below the 4.7% threshold at which hydrogen becomes combustible in open air, and it includes multiple safety features specifically designed to maintain that margin. George Wiseman has been working with this gas since 1986 and has built those decades of experience into every machine.
See the homepage for more on how AquaCure approaches safety.
No, this one is a firm no. Breathing directly from the Humidifier skips a safety step: the Humidifier's job is to catch any residual lye carried along with the gas, but breathing straight from it removes the additional protection that comes from routing the gas through the drinking water bubbler first, which provides extra mitigation against any lye reaching your lungs.
This isn't theoretical. George has described briefly inhaling a small amount of lye directly into his lungs back in 1996, during early experimentation, and it caused real pain and burning, comparable to lung damage or pneumonia-like symptoms. As a matter of habit, all gas used for breathing should pass through the full bubbler setup, not skip a stage.
Yes, though it takes a bit of setup and technique to work well.
You'll need a 1/4" barbed Tee (or Y) fitting, available at most automotive supply stores, connected to the output of the Drinking Water Bubbler with a short length of 1/4" ID vinyl hose. This splits the gas flow so two people can breathe from the same AquaCure at once.
For the first 15 minutes, it helps to synchronize your breathing so one person exhales while the other inhales. Here's why: whenever someone exhales, they create back pressure that blocks gas from coming out on their side, while inhaling creates a vacuum that pulls gas toward them. The gas naturally flows toward whoever is inhaling. If you're both breathing normally without syncing up, it still works, but it takes longer for both people's blood to reach hydrogen saturation, since the gas tends to favor whoever has the larger lung capacity (often, but not always, the larger of the two people) whenever you happen to inhale at the same time.
After about 15 minutes, both people's blood should be saturated with hydrogen, and maintaining that saturation only requires a small, steady amount of gas going forward. At that point, breathing normally (without synchronizing) works fine for the rest of the session.
One setting note: when two people are sharing a Tee, set the gas output to match the smaller person's setting, not the larger person's. Since gas flow follows whoever is inhaling at a given moment, the smaller person will sometimes get the full flow, so their setting is the one that matters for safety.
You can, but heating it defeats the purpose. Warming HydrOxy-bubbled water drives out the dissolved goodness (hydrogen, ExW, and other beneficial properties), so by the time the water is hot enough for tea, coffee, or oatmeal, most of what made it worth bubbling in the first place is gone. Cold water holds onto that goodness better than hot water.
This is also why clear, bubble-free ice cubes are made using hot water rather than cold: heating drives the dissolved gasses out before the water freezes, so nothing is left to form the cloudy bubbles you'd otherwise see.
No, and this is a genuine safety concern, not just a "best practice" recommendation.
Pure HydrOxy is explosive, and while a small ignition inside a bag over an arm or leg is startling but basically harmless (the bag simply pops, with no sensitive tissue nearby), a bag sealed over your head is a different situation entirely. Your eyes, nose, ears, and lungs would all be directly exposed if ignition occurred, and separately, the AquaCure doesn't produce enough gas volume to safely sustain your oxygen needs in a sealed space around your head, so there's a suffocation risk even without ignition.
Localized use, like a bag over just the scalp for a specific application, is fine, since it doesn't involve your airway or face. But anything that seals off your nose, mouth, or eyes is a hard no. There's also no upside that would justify the risk: whatever benefit someone might be after from this kind of exposure is already achievable more safely through spot application or with BG-bubbled water.
We'd rather be upfront about risks like this one than leave people to find out the hard way. Understanding where the real dangers are (and aren't) is part of using HydrOxy safely.
Not effectively, no. Hydrogen is the lightest gas there is and diffuses faster than any other gas, so if you release it into open air it disperses and rises away almost immediately. You wouldn't get any meaningful benefit unless you were somehow sealed into an airtight space, which introduces its own serious risks (carbon dioxide buildup, and hydrogen concentration climbing into combustible territory).
The cannula works because it delivers the gas directly to your airway, at the moment you inhale, before it has a chance to disperse. Worth knowing: even with a cannula, about two-thirds of the hydrogen produced is naturally lost to the air during the portion of your breathing cycle when you're exhaling rather than inhaling. That's expected and not a sign anything's wrong with your setup.
No. Pure HydrOxy is explosive, and introducing it directly into the body this way carries a real risk of serious injury.
The reason inhalation is safe is that the gas is diluted with air before it ever reaches you, keeping the hydrogen concentration well under the 4% threshold where it becomes combustible. Undiluted HydrOxy at its natural ratio (roughly two-thirds hydrogen, one-third oxygen) doesn't have that safety margin. Introducing it into an enclosed space in the body, rather than breathing it in open, ventilated air, removes the dilution that makes normal use safe.
The nasal cannula is the only insufflation method we recommend, for exactly this reason.
The most effective approach uses both, not one instead of the other.
A large review of hydrogen research (drawing on hundreds of individual studies) found that drinking hydrogen-rich water works better for some conditions, while intermittent inhalation works better for others. Some marketing in the hydrogen space has picked out the finding that favors drinking water and left out the rest, but the fuller picture is that inhalation outperforms drinking water on more measures, across more conditions. Combining the two covers more ground than either one alone.
Intermittent use matters here too. The body seems to need a "rest and absorption" period after a hydrogen dose, whether from water or gas, to get the most benefit from it. That mirrors how we get hydrogen from food: in intermittent doses through eating, not as a continuous supply. In practice, this means several shorter inhalation sessions tend to work better than one long one.
On sheer volume: about 12 seconds of inhaling HydrOxy delivers roughly as much hydrogen to the blood as drinking a full liter of hydrogen-rich water at 1.6 ppm, which is close to the practical ceiling for how much hydrogen water can hold. That's not an argument for skipping the water. It's a reflection of how much more hydrogen inhalation can deliver in a short amount of time, which is part of why both methods have a place.
HydrOxy adds two things plain hydrogen water and hydrogen-only inhalation don't: the ExW component, and (for AquaCure specifically) frequency-based water treatment. Both are covered in more depth on the Research pages.
George's own practice: about 10 minutes per liter (roughly a quart) of water, using an AquaCure running at its standard 50 liters-per-hour gas output.
For best results, use a fine-bubble diffuser, like the kind used in fish tanks, rather than letting the gas come out as large bubbles. This maximizes how much of the gas actually makes contact with the water.
Because bubbling water with HydrOxy changes what the water actually does for you, not just what's dissolved in it.
Most water, including plain distilled water, is electron-deficient. When you drink it, your body has to expend some of its own energy processing it. Water that's been bubbled with HydrOxy is electron-rich instead, thanks to the ExW (Electrically Expanded Water) component, so instead of costing your body energy, it contributes some. This shows up as a measurable shift in ORP (oxidation-reduction potential): ordinary tap water typically tests positive, meaning electron-deficient, while HydrOxy-bubbled water tests meaningfully negative. That shift from positive to negative ORP is a big part of what makes water genuinely hydrating, beyond simply containing H2O.
On top of that electron-rich quality, bubbled water also carries dissolved hydrogen itself, which functions as a supplement for the body's most abundant element. And because HydrOxy is inhaled elsewhere in a typical routine, drinking bubbled water isn't a replacement for that; it's a second, complementary way to get the same core benefits (hydrogen and bioavailable electrons) into your system throughout the day, alongside inhalation rather than instead of it.
About a day, roughly speaking. Bubbling water with HydrOxy enhances it in a few different ways at once (ORP, frequencies, pH, and more), and most of that "charge" fades over time. Testing shows charged water has a half-life of about 24 hours: after a day, roughly half the extra energetic benefit is gone, and after another day, half of what remained is gone too.
The water doesn't go bad as this happens. It's still good, clean water. It just gradually loses the extra boost that bubbling provided. This is the practical reason to bubble your own water fresh with a machine like the AquaCure rather than buying pre-bottled "hydrogen water": bottled versions are typically tested and marketed based on how they measure right after production, not after they've been sitting on a shelf for days or weeks by the time they reach you.
There's a lot of general advice online about daily water intake, but three things matter more than most people realize: how much you're drinking, what kind of water it is, and when you drink it.
How much is enough?
A simple starting point: multiply your body weight by roughly two-thirds to get your daily minimum in ounces. For example, someone weighing 175 pounds would aim for about 117 ounces a day, or roughly 3.6 quarts. If that number surprises you, you're not alone; most people drink well under this amount.
Activity level adjusts that baseline. Add about 12 ounces of water for every 30 minutes of exercise, since you lose water through sweat and breathing, and your body needs more water to help clear the metabolic byproducts of exercise. Someone who works out for 45 minutes, for example, would add about 18 ounces to their daily total.
What kind of water matters as much as how much.
Clean water matters because most impurities in water, whether from minerals your body can't use, or residues like hormones and other trace contaminants, create work for your body rather than helping it.
A higher pH can be a good sign, but only when it comes from the right source. Water gets its pH boosted in different ways: some technologies raise pH by concentrating minerals already in the water, while HydrOxy raises it because of the extra hydrogen and electrons it adds. The mineral-based approach doesn't carry the same benefit; it's the hydrogen itself that does the real work.
The most important, and most overlooked, factor is ORP (oxidation-reduction potential), which measures whether water is electron-rich or electron-deficient. Electron-deficient water (positive ORP, which describes most tap water) pulls electrons from your body as you drink it. Electron-rich water (negative ORP) does the opposite: it gives electrons to your body, which is a meaningful part of what makes water genuinely hydrating rather than just wet. HydrOxy-bubbled water is electron-rich because of the ExW component, which is why it tests with a notably negative ORP compared to ordinary tap water.
When you drink matters too, and it's worth building a routine around.
- Start your day with at least a liter of HydrOxy-bubbled water right when you wake up.
- Spread your daily water intake out with a consistent routine rather than trying to catch up all at once.
- If you feel hungry, try drinking water first (up to a liter), since thirst and hunger are commonly confused. If you're still hungry after that, go ahead and eat.
- Drink a liter of HydrOxy-bubbled water 20 to 30 minutes before a meal. This can help reduce how much you eat out of a hydrogen need rather than an actual food need, and gives your body water to work with for digestion.
- Sip water steadily during exercise; your body needs more water to work efficiently than most people expect.
It depends on where in the system the water is going. The AquaCure treats three different water uses differently:
In the AquaCure itself, and in the Humidifier: no. Use only distilled (or otherwise certified pure) water in both. Filtered, spring, well, and rain water all carry impurities that cause real problems: some produce poisonous gasses you don't want to inhale, most cause sludge to form quickly enough to clog the machine's internal passages, and some plate onto the electrodes and eventually cause the machine to stop producing gas. Impurities can also cause foaming, which pushes lye out of the AquaCure faster than intended and can overwhelm the Humidifier. Since the Humidifier's whole job is scrubbing residual lye out of the gas before it reaches you, feeding it anything less than pure water compromises that safety step and risks lye reaching your drinking water.
RO (reverse osmosis, also called deionized) water is a partial exception, but with a real caveat. RO water can theoretically work in the AquaCure and Humidifier, but only if it's genuinely high-purity, tested at 50,000 ohms of resistance or higher. In practice, most home and even business RO systems aren't well maintained enough to reliably hit that mark; more impurities in the water means lower resistance. Unless you have certified, tested RO water at that purity level, treat it the same as filtered, spring, well, or rain water and use distilled instead.
In the Drinking Water Bubbler: your choice. This is the water you actually drink, so whatever you're most comfortable with is fine here, RO, filtered, or otherwise. The general recommendation is BG-bubbled distilled water, since starting with a clean base and adding HydrOxy to it gives you both purity and the added benefit of hydrogen and ExW. But the AquaCure's operation doesn't depend on what's in the Drinking Water Bubbler the way it depends on purity everywhere else.
See also: Is it safe to drink only distilled water?
Yes. George has been drinking distilled water exclusively since 2005.
The concern people usually raise is that distilled water, over the long term, leaches minerals from the body without replacing them. A few things are worth understanding about that. First, the "detox" effect that concerns people takes a long time to happen at all, and it's questionable whether it ever fully removes everything critics claim it does. Second, while it's true that distilled water (like all water) pulls some minerals out of the body along with it, this isn't unique to distilled water; all water does this to some degree. Third, most of the minerals typically added back into water (by ionizers and similar products, for example) aren't in a form your body can actually absorb and use. Adding them back doesn't give you something usable; it just gives your body more non-bioavailable material to process and eventually eliminate as waste.
The minerals your body actually needs come from food, not water. Plants convert raw minerals into forms your body can use; a glass of mineralized water generally doesn't. There are a small number of exceptions, like sodium chloride (table salt), which the body can absorb fairly directly, but most people already get enough of that from their diet without needing to add it to their water. If you're sweating heavily and drinking a lot of water, a salt tablet might be worth considering, but that's a specific situation, not a general recommendation.
There's also a practical case for distillation specifically, beyond the mineral question: it's an effective way to remove microplastics from water, something filtering alone doesn't reliably do.
One important distinction: plain distilled water and HydrOxy-bubbled distilled water aren't the same thing to drink. Plain distilled water is electron-deficient, meaning your body has to expend some energy processing it. Water that's been bubbled with HydrOxy is electron-rich, thanks to the ExW component, so instead of costing your body energy, it contributes some.
Still have questions?
We’re happy to answer anything that isn’t covered here, whether it’s about safety, how AquaCure fits into your day, or something specific to your own situation.
No question is too small.
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