Ok guys, I called my "supplier" and asked some questions and I got some answers.
First off, remember guys I live in Barbados (the country not a place in the US) and we naturally have clay occurring, therefore it's not bagged or aything. We dig it up and make it into the pots and other craft. Now the stuff that i got for free, the only additives were water and heat, so it's about as natural as you can get.
They have done lots of testing and it's completely inert and non-toxic, the lady said i could eat it. lolololol
Plus you can eat off of it.
I'm currently testing it in what was my krib breeding tank with three Amazon swords. I potted them on Sunday and saw new leaves by monday. I'm monitoring the situation.