How well the Citric Acid works on Gunite walls ? How many pounds I need for 23000 Gallons of water to remove brownish yellow stain due to winter elements.
Re: Yellow Staining, Acorbic Acid Works Well, BUT.....
How well the Citric Acid works on Gunite walls ? How many pounds I need for 23000 Gallons of water to remove brownish yellow stain due to winter elements.
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