Older Melody filters
Older Melody owners may recognize the UltraWater, BioStone Plus, .01M UF, and Remineralizer Max products also associated with other pre-H2 machines. Shared product names make it especially important to identify your exact ionizer before assuming a cartridge is right for it. Check the older-model filter directory for Melody listings and current availability; an H2 upgrade is another option if you want a new machine.
No need to guess based on a filter name alone.
First, identify what you used
They are useful clues to your previous setup—not a promise that a current H2 cartridge fits your older ionizer.
This UltraWater cartridge appeared in several older ionizer listings, including Delphi, Athena, Melody, and old Jupiter models. Use the machine label—not the cartridge name alone—to identify the relevant old-model guide. An H2 upgrade is a new ionizer with a separate filter system.
BioStone Plus was listed for older Jupiter/Emco machines and the right-side second position on the old Athena. Vesta GL had a separately named product. Use your older machine's model to understand which listing applied; the shared name does not identify a universal H2 replacement.
This .01M UF product name appeared across multiple older-machine listings and refers to a legacy ultrafiltration cartridge, not a current H2 part. Check your ionizer model before deciding what to do next.
This former shared listing served several older ionizer categories. If it is the name on your order, identify your Melody and discuss your source water and installation when comparing a new H2 ionizer.
Important compatibility note
H2 Series replacement filters are designed for H2 Series machines. Do not order one for an older ionizer without checking compatibility with AlkaViva.
The transition to H2 is a new-machine decision, not a replacement-filter substitution. There is no automatic one-to-one Melody H2 filter for every older Melody. Start with how your Melody is installed and what you want from a new machine.
The Delphi H2 is an undersink model; Athena 9 H2 and Athena 7 H2 are countertop models. Compare the installation types and speak with a specialist rather than choosing solely from the name of a legacy cartridge.
H2 Series replacement filters are designed for H2 Series machines. Do not order one for an older ionizer without checking compatibility with AlkaViva. A photo of your machine, its model label, and the old filter name or package can help with identification.
Clear answers
Still not certain? Have your machine name or a photo ready when you call.
775-324-2400Do not order by a similar-looking filter or product name. Confirm your machine and cartridge compatibility with AlkaViva.
A photo of the machine, its model label, and the old filter name or package is a useful starting point.
A helpful conversation starts with what you know
We can help you make sense of the older machine and talk through current options.
