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reguarding the epsom salts... check out this link. http://www.advancedaquarist.com/issu...l2004/chem.htm its very interesting and worth reading.

Epsom Salts are pure Magnesium Sulfate and will register on a test. I have read about people using it for reef tanks but I have no experience with it... I think my main qustion is weather or not my math is right. adding eight bottles of Magnesium concentrate to my tank over the next two weeks...

I just tested my water...Calcium is low and won;t come up so I tested Magnesium and it is 1140. I would like to raise to about 1350. I have a 75 gallon reef tank with about 25 gallons in sump/fuge. I have a bottle of Julian Sprung's Magnesium Concentrate. If I am doing the math right I would...