The Planted Tank Forum - View Single Post - Ca:Mg ratio question
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Old 01-26-2013, 09:57 PM   #7
danielt
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I'll test again, last measurement from a month ago read 160ppm for Ca. Mg test I didn't have at the time.

What i know is mg/L does not equal PPM. 1PPM = 17,9 mg/L is what I read. Might be wrong though, I use mg/L.
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