I was a bit clueless how much to add so I used 2 Tablespoons. 1 tsp is 138% of the RDA. So it is pretty concentrated. Maybe I shouldn't make it so strong, it's been affecting my gut a bit. It did act pretty much like they described. The water got clear eventually, but the sides of the bottle didn't cave in. I also added some lemon juice and splenda later on because it tasted nasty!

Maybe I should be using magnesium oxide... they didn't have it at Swasonvitamins. Perhaps next time I buy magnesium I'll try the MoM.