We have a water softener, standard ion exchange type in which you put salt blocks.
We still get some scale, though it's a much finer and harder scale which is immune to normal descaling acids, so I'm guessing Sulfates. It's a cosmetic problem really, as it gives the the chrome plated taps and pipes a matt covering as well as staining the porcelain a bit. I've tried chemistry to no avail, and abrasion with normal cleaners doesn't work.
Wire wool works, but is time consuming and runs the risk of scratching the chrome. I haven't tried it on the porcelain.
I wondered - if I turned the softener down so that some carbonate got through, would the subsequent combined deposit be easier to remove with normal acidic descalers?
Or other idea?
Cheers