Okay, I really want to try one of these salt soaks. I have a question. I belong to a food coop which has all kinds of stuff. In the Bulk Foods section they have 50 lb bags of sea salt, is this what I want to get? It's not in the HBA section and so I'm thinking it must be the kind to eat (who on earth needs that much salt to eat?) But I didn't know if it was kind of the same stuff or not. I know that might be a dumb question, but I've only messed with oils and such.