Hello, we had a new shower put in almost a year ago with marble tile. We squeege after use and it’s been low maintenance with regular cleaning. We have resealed it once .A few weeks ago, I noticed the appearance of what looks like calcium or soap scum build up. It looks like speckles or a plaque on the surface of the tile. About 2 months ago, I had switched to Granite Gold for cleaning products.

I purchased MB’s mineral deposit remover and I’m not sure it has any impact. Because it is marble it looks like the regular options, vinegar, clr aren’t options.