WOW, a lot of people buy this stuff. I never thought I would actually have to tell people NOT to add URANIUM, MERCURY, LEAD, ARSENIC, or FLUORINE to their garden or aquaponic system...

P.S. Where is the study regarding the fish growth? I had emailed the company months ago; needless to say, they never responded. I guess they're not used to people actually checking their sources and claims made by companies!