-Mac Sadly, the old filters will actually remove most/all of the guts from the solution.
If you think the pipes are clean, you could:
- empty the small internal RO storage tank (see Osmio Video)
- remove the remineralisation filter, break up a tab and push it in the little hole on the bottom of the slot (ask if you are not completely sure what I mean) where it goes, to fill the internal tank…..replace the re-mineralisation filter
- Put in your new filters
- Allow it to refill the internal tank
- Leave 30m
- empty small internal RO storage tank again
Then allow it to refill and flush as normal when changing filters.
Finally run 300 ml of boiling water from the unit.