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A change of 0.1 units in dKH probably is close to the resolution limit of the test. I'd probably keep the dose fairly constant, and get a longer trend line. I agree that dosing the Fuel might change the consumption rate, so if that dose differs from day to day, you might need to vary the alkalinity dose. I'm not sure how long it'd take from the dosing of the Fuel to the corresponding drop in alkalinity, if any, so that might need some measurement, too.
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Jonathan Bertoni
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