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Sodium Bisulfate (Spa Down / Dry Acid) stains!?

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spladao:
Hey all, it seems some Sodium Bisulfate / Spa Down / Dry Acid spilled and stained our tile grout and our concrete.

Is there any way to get that out? Fix it? Or are we just F*cked?

Thanks in advance!

BullFrogSpasMN:
The acid actually probably 'cleaned' that area of concrete instead of staining it actually....Acid can be used in lighter concentration to clean hard water/rust/iron/etc. stains from concrete walkways, patios, etc

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