Older Athena filters
The Athena JS-205 used a two-filter arrangement. Its older category included a sediment filter, an UltraWater-and-sediment package, and a BioStone Plus-and-sediment package. Those names can help identify what you previously purchased. Check the older-model filter directory for Athena listings and current availability; an H2 upgrade is an optional new-machine path.
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 older Athena filter was listed for the left-side first position. Confirm your Athena JS-205 label and current availability. Athena 7 H2 is a different machine; its filters are not a like-for-like cartridge order for the old Athena.
This package paired an older Athena sediment cartridge with an UltraWater cartridge. Both cartridges belonged to the previous-generation setup. Compare an H2 ionizer as a complete replacement rather than searching for an H2 version of the old two-filter bundle.
This old Athena package combined BioStone Plus and sediment filters. Its name helps identify the previous filtration arrangement but does not specify a new-series cartridge. Bring the package name to an H2 upgrade discussion so your water and installation needs can be considered.
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.
On the older Athena, the sediment cartridge was listed for the left-side first filter position and BioStone Plus for the right-side second position. Those details describe the older product family; they do not mean an H2 cartridge fits an Athena JS-205. Verify the name and model printed on your machine.
The Athena 7 H2 is a different ionizer, not a cartridge substitution for the old JS-205. Compare it with Athena 9 H2 and Delphi H2 according to your preferred countertop or undersink installation, and ask AlkaViva to confirm the right next step for your setup.
H2 Series replacement filters are designed for H2 Series machines. Do not order one for an older ionizer without checking compatibility with AlkaViva.
Clear answers
Still not certain? Have your machine name or a photo ready when you call.
775-324-2400No. The shared name does not make their replacement filters interchangeable. Check your machine's model number before buying a filter or choosing an upgrade.
Start with your installation preference and water conditions, not the old package name. Speak with a specialist for guidance based on your home.
A helpful conversation starts with what you know
We can help you make sense of the older machine and talk through current options.
