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Applied Biochemists HCL Advantage is a specialized enhancer that improves the performance of muriatic acid, making cleaning more effective. Simply add this add to a muriatic acid solution to thicken it into a gel-like substance, enabling it to concentrate its cleaning power on pool surfaces. This not only reduces the amount of hand-scrubbing you need to do, but reduces fumes to increase safety. It even includes a sequestering agent that prevents bottom and drain staining. Best of all, HCL Advantage is compatible with chlorine, bromine, and biguanide, making it ideal for practically every pool.
8 fl oz for every 2-1/2 gallons of acid wash solution.
Mix muriatic acid with water at the recommended rate of 1 part acid to 4 parts water. Increase strength or use strait acid for tougher stains, use 1/2 pint (8 fl oz) of HCL Advantage for every 2-1/2 gallons of acid wash solution.