[GSAS-Member] Soft Water; Plants; Calcium; Magnesium

["Seattle_Aquarist" <Seattle_Aquarist@comcast.net>]

Hi All,
I have a problem; my water is very soft coming out of the tap.  Even though
I do a 20% water change weekly, my plants periodically exhibit symptoms of
calcium and sometimes magnesium deficiencies in the form of leaf deformities
and slow growth.  When I add additional calcium (calcium chloride) and
magnesium (Epsom salts) my plant perk up, grow more quickly, and the leaf
deformities decrease or disappear altogether.  My question is, do you add
anything to you water to increase the calcium or magnesium concentrations in
your tanks?  If you do add these minerals, would you share the information
as to what you add, when and how much?
Thanks,
Roy

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