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Would someone please provide me with the rationale behind having a Ca:Mg ratio of 3:1 and/or 4:1?

My tap water is <1dGH/dKH with approximately the same [Ca] & [Mg]. I increase hardness via CaCO3 and MgSO4.7H2O. Since mid March, I have been experimenting with various ratios of Ca:Mg (1:1, 3:1, 4:1, 1:3, 1:4) and I have not noticed anything peculiar. Therefore, I wonder if anyone has experienced anything negative that s/he can reasonably attribute to a deviation from the 3:1/4:1 Ca:Mg? Please share.

Last week, I started adding Ca & Mg in a 1:7 ratio just to see what happen so I am anxious to see how it'll turn out in the next few weeks.


Also, folks in areas with hard water, would you please consult your water report and see what the individual [Ca] and [Mg] are? I would love to know.

Thanks a lot.
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