You said 120 fluid ounces. How does that equal out to ounces of actual epson salt? Is liquid ounces the same as actual ounces of espon salt? Just wondering how much epson salt it would take to raise your mg.
On page one of this thread returnofsid posted a link to a calcultor. you enter your water volume and type of mag supplement you are using. for me it was saliferts liquid. give it a try.