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5birdy

How can I get white calcium off black grout?

5birdy
7 years ago

Our new pool has dark blue waterline tile with black grout (so that the lines disappear). Now the grout is turning white, making the tiles stand out totally changing the design. My PB says it is calcium from the water and not much I can do. Our pool store sold me Jack's Magic Power Blue Scale Off but it didn't do a thing. Any suggestions? I'm tempted to color with some sort of permanent pen!

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