Remineralize and structure the reverse osmosis you already own.
Everything here installs in-line after an under-sink reverse osmosis system and adds back what the membrane took out. Sango Coral restores calcium, magnesium, and 70+ trace minerals. UMH Pure conditions the flow before the faucet with no electricity and no consumables. Lumati adds molecular hydrogen by bottle. Nothing here replaces the system you have.
Two in-line stages, one bottle.
Sango Coral and UMH Pure go in-line after the RO storage tank, in that order. The Lumati bottle fills from the tap. Most RO owners start with the stage below.
GoodFor Sango Coral
An in-line cartridge of fossilized Okinawan Sango coral that dissolves calcium, magnesium, and 70+ trace minerals back into reverse osmosis water as it leaves the tank, in the natural 2:1 calcium-to-magnesium ratio. It raises pH through mineral content alone, with no synthetic alkalizing agents, and installs on 1/4-inch push-fit tubing after any under-sink RO.
- Media340 g fossilized Sango coral
- Trace minerals70+
- Ca:Mg ratioNatural 2:1
- Particle size8 μm
- Connection1/4-inch John Guest push-fit
- Flow rate3 L/min
- Cartridge lifeAbout 24 months
UMH Pure
A vortex flow conditioner that installs last in line, after Sango Coral and before the faucet. It does not filter, soften, or alter the water's chemistry. Research suggests structured water may be absorbed more efficiently at the cellular level and may support deeper hydration; that research is still developing.
Lumati Bottle V2
Fill from your RO faucet, run a 20-minute cycle, and drink. PEM electrolysis dissolves molecular hydrogen into the water at up to 4,220 PPB, third-party tested by H2 Analytics. Borosilicate glass body. Not a filter; use it on water that is already filtered.
UMH Sango Sea Coral Supplement
For travel, the office, and anywhere the Sango Coral cartridge is not. Same source coral as the in-line cartridge. It is not a substitute for filtration and is not a medical product.
Lumati inhalation and bath immersion generators are for clinics, spas, and dedicated wellness rooms. They are matched and quoted after a consultation and are not sold from a product page.
Book a free consultationWhich one goes in first?
The two in-line stages are sequential and independent: you can run Sango Coral alone, or both, on any under-sink reverse osmosis system. The bottle and the supplement need no plumbing at all.
| Sango Coral | UMH Pure | Lumati Bottle V2 | Sango Supplement | |
|---|---|---|---|---|
| Price | $289 | $997 | $200 | $169 |
| What it does | Restores calcium, magnesium, 70+ trace minerals | Conditions flow through a vortex; changes no chemistry | Dissolves molecular hydrogen into filtered water | Sango coral minerals away from the tap |
| Where it goes | In-line after the RO storage tank | In-line, last before the faucet | Countertop; fill from the RO faucet | Wherever you are |
| Order in line | Second, after RO | Third, always last | Not plumbed | Not plumbed |
| Power | None | None | USB rechargeable | None |
| Replacement | Cartridge about every 24 months | Nothing, ever | Nothing; recharge | Consumable |
| Certification or testing | Food-grade Okinawan coral media | TÜV EU · 5-year warranty | H2 Analytics: up to 4,220 PPB at 20 min | Not applicable |
| Filters anything? | No | No | No | No |
| Best for | RO water that tastes flat; the first stage most owners add | Owners who already run Sango Coral and want the third stage | Hydrogen with no installation | Travel and the office |
What to add, by situation.
What is a remineralization filter for reverse osmosis?
A remineralization filter for reverse osmosis is an in-line cartridge installed after the RO storage tank that dissolves minerals back into water the membrane left empty. A reverse osmosis membrane rejects dissolved solids by size, and calcium and magnesium are dissolved solids, so they leave with the contaminants: the GoodFor MicroMax 8500 reduces total dissolved solids by 93.8% in NSF/ANSI 58 testing. The result is water that is certified clean and tastes flat.
The GoodFor Sango Coral is that cartridge. It holds 340 grams of fossilized Sango coral from the seabed near Okinawa, milled to 8 μm, and dissolves calcium, magnesium, and 70+ trace minerals into the water at the natural 2:1 calcium-to-magnesium ratio. The pH rises through mineral content alone, the way spring water carries its pH; there are no synthetic alkalizing agents. It connects on 1/4-inch push-fit tubing, needs no power, and the cartridge is replaced about every 24 months. It is the second stage of the Hydration Stack, sold here on its own for owners of any under-sink RO. If you are weighing it against a standard alkaline cartridge, alkaline vs. remineralization filters covers the difference.
The UMH Pure is the third stage: a vortex flow conditioner that installs last in line, after Sango Coral and before the dedicated faucet. It does not filter, soften, or change the water's chemistry, and it is never positioned as a filtration device. It has no electricity, no consumables, and nothing to replace, and it carries TÜV EU certification with a 5-year warranty. Research suggests structured water may be absorbed more efficiently at the cellular level and may support deeper hydration; that research is still developing, and GoodFor makes no direct health claim for it.
The Lumati Bottle V2 adds molecular hydrogen without touching the plumbing. Fill it from the RO faucet and PEM electrolysis dissolves hydrogen into the water at up to 4,220 PPB after a 20-minute cycle, third-party tested by H2 Analytics. It is not a filter; it belongs on water that is already filtered.
New to the idea? Read how water optimization works first. If you do not own reverse osmosis yet, the Hydration Stack is all three stages in one system, and how the Hydration Stack works explains each one.
What comes after the membrane.
A certified RO membrane is the right first stage for drinking water. These are the stages that come after it.
Put back what the membrane took out.
Calcium and magnesium leave with the contaminants; 93.8% TDS reduction in NSF/ANSI 58 testing includes both. Sango Coral restores them from a single natural source, in the ratio the coral carries, with no additives. Most people notice it first as taste.
Conditioning, not filtration.
The UMH Pure changes how the water flows, not what is in it. No power, no consumables, a 5-year warranty, and TÜV EU certification on the device. The research on structured water is still developing, and the page says so wherever it comes up.
Added, not installed.
Molecular hydrogen has the largest human literature of the three: over 2,000 peer-reviewed studies, beginning with Ohsawa et al., Nature Medicine, 2007, and a 2024 systematic review of 25 clinical trials. Concentration is the variable that matters, and the bottle's is a tested number.
Two push-fit connections, in this order.
Both in-line stages go between your RO storage tank and the dedicated faucet. Sango Coral first, UMH Pure last, always.
RO storage tank
Your reverse osmosis system stays exactly where it is. Cut in on the line from the tank to the faucet.
Sango Coral
1/4-inch push-fit on both ends. Minerals go back in here, before the water is structured.
UMH Pure
Last in line. Nothing to wire, nothing to replace. Never installed ahead of the Sango Coral.
Dedicated faucet
The faucet you already have. The Lumati bottle fills from it and needs no installation at all.
Both stages are passive in-line devices with no drilling and no drain work, so a plumber or a capable owner can add them in well under an hour. Our licensed team installs in Southern California, Houston, Austin, Tampa, and Miami/Ft. Lauderdale. Everywhere else the parts ship nationwide and we pair you with a master plumber for installation support. If your RO system is not from GoodFor, check the connection size on your tank-to-faucet line before ordering; the product pages list what each part ships with.
Keep the system. Upgrade the water.
Both in-line stages ship nationwide and install on the reverse osmosis you own. Most people start with Sango Coral and add UMH Pure when they want the third stage.
Not sure your reverse osmosis is the right base? Talk to our team. Every consultation is free.
Remineralization and structuring, answered.
What is a remineralization filter for reverse osmosis?
A remineralization filter for reverse osmosis is an in-line cartridge installed after the RO storage tank that dissolves minerals back into water the membrane left empty. Reverse osmosis rejects dissolved solids, including calcium and magnesium, along with contaminants; the GoodFor MicroMax 8500 reduces total dissolved solids by 93.8% in NSF/ANSI 58 testing. The GoodFor Sango Coral cartridge restores calcium, magnesium, and 70+ trace minerals from 340 grams of fossilized Okinawan coral, at the natural 2:1 calcium-to-magnesium ratio, and raises pH through mineral content alone.
Will the Sango Coral cartridge fit my reverse osmosis system?
The GoodFor Sango Coral connects with 1/4-inch John Guest push-fit fittings, the common line size between an under-sink RO storage tank and its faucet, and it is not brand-specific. Check the tubing size on your tank-to-faucet line before ordering; the product page lists what the cartridge ships with. If your line is a different size, a push-fit reducer from any plumbing supply joins the two.
What is the difference between an alkaline filter and a remineralization filter?
An alkaline filter is built to raise pH. A remineralization filter is built to restore minerals, and pH rises as a result. The GoodFor Sango Coral is a remineralization filter: 70+ trace minerals from a single natural source, with calcium and magnesium in the 2:1 ratio the coral carries, and no synthetic alkalizing agents. The resulting pH depends on your source water and flow rate. GoodFor's standard alkaline filter is a separate product and is not part of this collection. Alkaline vs. remineralization filters covers the comparison in detail.
How often does the Sango Coral cartridge need replacing?
About every 24 months for a typical household, since the coral media dissolves slowly into the water over time. Replacement cartridges are available on Subscribe & Save. The UMH Pure installed after it has no consumables and is never replaced.
What does the UMH Pure do, and does it filter?
The UMH Pure is a vortex flow conditioner installed last in line, after the Sango Coral and before the faucet. It does not filter, soften, or change the chemistry of the water, and GoodFor never positions it as a filtration device. It runs with no electricity and no consumables and carries TÜV EU certification with a 5-year warranty. Research suggests structured water may be absorbed more efficiently at the cellular level and may support deeper hydration; that research is still developing, and GoodFor makes no direct health claim for it. The evidence for each stage is laid out on how water optimization works.
What order do Sango Coral and UMH Pure install in?
Reverse osmosis storage tank, then Sango Coral, then UMH Pure, then the faucet. Minerals go back in before the water is structured, and the UMH Pure is always the last component before the faucet. This is the same sequence used inside the Hydration Stack.
Do I need reverse osmosis before adding these?
Yes for the Sango Coral: remineralization exists because reverse osmosis takes minerals out, and tap water or whole-home filtered water still has its minerals. The UMH Pure and the Lumati bottle can be used on any filtered water, but neither one filters, so they belong after a certified filtration stage. If you do not own reverse osmosis yet, the Hydration Stack is the MicroMax 8500 RO, Sango Coral, and UMH Pure sold as one system.
How much hydrogen does the Lumati bottle produce?
Up to 4,220 PPB (parts per billion) of dissolved molecular hydrogen after a 20-minute cycle, third-party tested by H2 Analytics under lab report H2AR-250603-1. The bottle holds 390 mL, uses PEM electrolysis, has a borosilicate glass body, and recharges by USB. It is not a filter and should be used on water that is already filtered. GoodFor does not claim hydrogen water treats or prevents any condition.
I already own a Hydration Stack. What here applies to me?
The Hydration Stack already includes the Sango Coral and the UMH Pure, so this collection is where you buy the Sango Coral replacement cartridge about every 24 months. The Lumati Bottle V2 adds molecular hydrogen to Stack water with no installation, and the supplement carries the same coral minerals when you are away from home.
Do you install these?
Our licensed team installs in Southern California, Houston, Austin, Tampa, and Miami/Ft. Lauderdale. Everywhere else the parts ship nationwide and we pair you with a master plumber for installation support, or your own plumber can follow the sequence: tank, Sango Coral, UMH Pure, faucet. Both stages are passive push-fit devices with no drilling and no drain work. Book a free consultation if you want installation handled.
Is any of this a health claim?
No. Sango Coral restores minerals that reverse osmosis takes out, which can be measured at the faucet. The UMH Pure's device certification is TÜV EU; the research on structured water is still developing. Molecular hydrogen's concentration is a tested number, and the studies behind it are named by author, journal, and year wherever GoodFor cites them. Whether any water is appropriate for a medical condition, a medication, an infant, or a pregnancy is a question for your physician.