I have a ten year old home with a 2 cubic foot backwash filter and a 1 cubic foot softener to remove high levels of Manganese.
Last year the backwash filter developed a leak in the bottom so I replaced it with new gravel and calcite.
Recently, the Manganese has been precipitating in the toilets which must be cleaned every 3 days or so.
The softener's media has never been replaced.
Both units cycle once a week with two of us living in the home.
There is also a large 5 micron inline filter after the others which never seems to get dirty.
I was thinking of replacing the media in the softener and possibly increasing the frequency or time of regen or both, though it was set by the people who tested the water and sold the units.(Cuno).
Any input would be appreciated.