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  1. M

    Need help lowering ALK

    I filled my pool (13400gal) with well water and the ALK is at 400, PH 7.6. I know that I have to lower the PH to 7.0 and then aerate the water to bring the PH back up. Is there a formula I can use to calculate how much acid I need to lower the PH to 7? I am using the bleachcalc app but I am...