I found a way to remove water stains from marble successfully.
Water stains on marble sink.
Marble countertops and other surfaces are no stranger to ink stains.
Mold is a common problem in many bathroom settings.
But pure water does not stain marble sinks or countertops or tile.
Fill the marble sink halfway with warm water and add 1 tablespoon of mild dish detergent or 1 4 cup of ammonia.
Most likely the dark stain you are seeing around the sink drain is either from mold growth or a rust stain developing.
Water stains are yet another common stain that occurs on marble.
Difficult stains remove more difficult stains and water spots with a thick paste of baking soda and water.
Buff hard water accumulations using.
It could also simply be water absorbing into the marble which will darken the area to a more gray color.
Rub the paste into the stain with a soft cloth.
Add the polishing powder.
Add enough mb 11 polishing powder to cover the stain.
Dry with a soft cloth.
Then i took an old toothbrush and scrubbed it on in the affected areas.
Rinse the paste away with clear water.
If you use ammonia put on a pair of rubber gloves to protect your hands.
Finally i wiped it off with a damp paper towel.
These stains can be the result of a water glass that was left on a marble countertop for too long or from hard water buildup around sinks and showers.
Spray the polishing powder 2 to 3 times with the spray bottle to dampen the polishing powder.
Cover the area with plastic wrap for 24 hours.
Mold can stain marble bathroom countertops floors etc.