So I just read another post that you cannot use "aquarium" salt to set up a brackish tank. I've been dooped then. When I first got my dragon goby, the guy at the fish store told me that it should be fine as long as I just doubled the amount that it says on the carton. I did that, but if this really isn't healthy and doesn't work then would someone please fill me in. I would like my goby to live for a little longer than a year.