Quote:
Originally Posted by untamed
You need to understand and control Calcium and Alkalinity before you start being concerned with Magnesium. If you are going to need to supplement anything, it will be Ca and Alk to begin with.
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Correct me if im wrong but if your Mg is low your Ca will also be low or hard to keep up. If all 3 (KH, Ca, Mg) are at the proper level it will be much easier to maintain the levels.