you might try a high alkaline solution. this seems to work on cleaning
grout fairly well without
damaging the grout. Check for an aquamix product called heavy duty tile
cleaner/stripper I think is
the name. It clearly states, "High Alkaline" solution on the back. As
always, test in an inconspicuous
area if possible.
Cheers,
cc

"Matt" wrote in message
news
My water softener has leaked hard water very slowly for some years.

That made the floor damp and caused a buildup of lime on the concrete
floor. The lime is probably not more than quarter millimeter thick but is
unsightly.

My impulse is to use Lime Away, but I expect that that would attack the
cement in the floor.

Is there any good way to get rid of these lime stains?