any ideas?? i need a locost solution to clean a steel bath, it has dark coloration at the bottom of the bath and also green and blue marks where the taps run onto the bath.

obviously don't want to damage the bath but want to bring it back to a respectable level and was thinking there might be some old fashion way of doing i haven't thought of -vinegar bi-carb etc, if not would there be any modern cleaners up to the job, any advice is keenly required!

Cheers matt

I spent ages trying to clean up an old seroiusly stained cast iron bath - all my solutions failed and I ended up going the DIY self enameling(?) route and it gave pretty damn good results if I say so myself. Don't recall who's kit it was but it worked.

Phosporic acid ---- ie Naval Jelly -----

surely electrolysis slightly altered would do this