I am adding ppm of Stuff times a week
and
I'll change % of the water every

How much Stuff would I have every day for the next ?


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I am starting with ppm Stuff after a waterchange
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Instead of my regular dose add ppm of Stuff at waterchange.
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Calculate for % ppm weekly uptake.
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I feed mg of food a week into my gal L tank. This food is % mg/kg Stuff.
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My tap has ppm Stuff.