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Re: Magnesium shortage

>From: krandall at world_std.com
>Subject: Magnesium shortage

>I don't think there are any hobbyist grade tests for magnesium, but it's
well.... testing for magnesium is not difficult at all ! Total hardness
less calcium content. You will find a rough (but not so rough!) estimate of
magnesium concentration. But you should know magnesium turnover is pretty
fast, so what you may read, doen't mean necessarily that you have a
magnesium deficiency.