We have a spillover hot tub with glass tile. We have always had white efflourecense coming from the grout, but now it is turning blue (see pics). Any ideas what is causing this?
Blue and white scale?
- Thread starter mbeavers1
- Start date
Is it by blue tiles? Maybe it's leeching some color out of those tiles? Is all the efflourecense blue or some still white? I think (someone please correct me if I'm wrong) it's perfectly normal to have efflourescence on the backside of a spillover or disappearing edge just due to the nature of water seeping through that grout eventually and showing mineral deposits on the backside? Can't say I can speak intelligently about the blue color though, hopefully someone else can chime in.
I can't see any real blue color on the grout. What I see looks gray/green. Is that the blue you mean?
Some is white, some has this blue stuff. It starts in the grout lines and runs down across the glass tiles. The tile is glass so I doubt the blue is coming from them. We have the efflourecense all the time but it was always white before.
I see it now but I have no clue as to what it is. If it was my pool, I would clean ALL the grout with Clorox at first and if that had no affect on either color, I would do so again with a 50/50 mix of muriatic acid. With luck, you may get it all clean.
Copper precipitates onto pool surfaces as a dark, almost indigo color. The blue color on your tile does not look like copper.
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