H2 hydrogen therapy on an Ella walk-in tub is a hydrogen generator and pump installed under the molded seat, fed from a distilled water tank, that infuses the bath with molecular hydrogen as micro and nano bubbles through a single jet below seat level. Owners also call it a hydrogen bath, hydrogen water therapy or the H2 system. On the Standard60 it is packaged together with microbubbles as the H2 and Microbubbles System.

How It Works

Once the water covers the hydrogen inlet jet, one press of the H2 button starts the generator. The blue tank feeds distilled water to the generator, which produces hydrogen and injects it into the bath as micro and nano bubbles through the single jet. Because the hydrogen rides in nano bubbles, it stays in the water longer. By the time the tub fills to the drain overflow, the concentration reaches 1500 PPB, and it may rise to about 2000 PPB during an extended 15 to 20 minute bath. Since 1000 PPB equals 1 ppm, that is 1.5 ppm rising toward 2.0 ppm. Every hydrogen tub is individually tested before it ships and comes with verifiable test results, and levels of up to 2.2 ppm are guaranteed per those results. The sheet that ships with your tub is the authoritative number for your unit. Our hydrogen therapy common questions article walks through PPB and PPM side by side.

Which Ella Models Have It

The Standard60 is the catalog model with the H2 and Microbubbles System, which pairs the hydrogen generator with infusion microbubble therapy on a 1 HP, 10A pump with a pressure vessel and agitator valve. The rest of that tub's specifications are in the Standard and Standard60 profile. Special-order installation in other Ella tubs depends on the space available under the deck, so please ask your Ella dealer or the team at (800) 480-6850 about your specific tub before assuming either way.

What to Know as an Owner

• Fill the blue tank with distilled water only. Tap water carries minerals the system is not designed for, and topping up with anything else can lead to weak output or a dirty tank over time.
• Before first use, cut the shipping ties, remove the container from under the tub, connect the hose to the front of the tub, then fill the tank with distilled water.
• Never press the H2 button until the water is above the hydrogen inlet jet and the microbubble port, because the pump must not run dry.
• Keep the test results that shipped with your tub with your other paperwork. They are the reference for your unit.
• For a ticket, have your model, serial number, a photo of the blue tank and hose connection, and a short description of what you see ready at ellasbubbles.com/support.

Common Questions