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Unread 01/29/2010, 11:57 AM   #3
vegaskid11's Avatar
Join Date: Feb 2006
Location: Las Vegas
Posts: 742
I buy mine from Bulk Reef Supply. You may want to use the Mag Sulfate in addition to the Mag Chloride in the proportions that Randy has laid out so that you can keep a balanced ionic level. I believe when you are trying to raise mg levels drastically this is even more important.

You should mix 3 cups of Mag Sulfate with 5 cups of Mag Chloride in fresh water to make a 1 gallon solution. Let this dissolve for 24 hours and then dose it slowly into your tank. 1 gallon of this solution will contain something like 47,000ppm of magnesium.

If your tank is 45 gallons and your Mg level is a 1000 and you want to be at or around 1350 then you will need about 1250ml of the solution or roughly 1/3of your gallon of stock solution. Split the addition up over 3 day period.

FWIW, you can pick up a 1/2 gallon of dry MgChloride and a 1/2 gallon of MgSulphate from BRS for 11 dollars each plus shipping. This would likely last you for 3 years or more. Good Luck

The information comes from here:
An Improved Do-it-Yourself Two-Part Calcium and Alkalinity Supplement System

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