mag recipe

Here's a link to Randy's 2 part solutions article:
http://www.advancedaquarist.com/issues/april2004/chem.htm
In the article he writes the following recipe for Epsom Salts...
Randy Holmes-Farley said:
Part 3: The Magnesium Sulfate

Dissolve a 64 ounce container of Epsom salts (about 8 cups) in enough purified fresh water to make 1 gallon total volume. This solution is added much less frequently than the other two parts. Each time you finish adding a gallon of both parts of the Recipe #1, add 610 mL (2 ? cups) of this stock solution. You can add it all at once or over time as you choose, depending on the aquarium size and set up. Add it to a high flow area, preferably in a sump. In a very small aquarium, or one without a sump, I'd suggest adding it slowly; especially the first time you do so to make sure that corals don't get blasted with locally high concentrations of magnesium, sulfate, or any impurities in your Epsom Salts. The first time that you add it, you might add a small portion and make sure there isn't any problem before proceeding to add the remainder. This solution contains about 47,000 ppm magnesium and 187,000 ppm sulfate.
 
One recipe is magnessium and epsom salt while the other is only epsoms. :confused:
Where's the best place to get a few cups of Magnessium?
 
The easiest place would be at your local drug store - just buy Epsom Salt and follow Randy's recipe.
Or, if you want less hassle, and don't mind spending a little more, head to your LFS and buy some magnesium supplement products. You can get dry stuff you mix with RO water, or liquid stuff ready to be added.
The MgCl (forgive me for not doing the proper formula - probably MgCl2?)stuff Greg writes about is a dang cheap way to buy magnesium in bulk - serious bulk.
 
ok, say you have 300 gallons of water you want to bost it from 1200 to 1350, how much would you add?
 
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