Originally Posted by lumberjacknooj
Checkout this link
from this post.
That's where I got my info about the health hazards of black beauty
Evidently you misunderstood what was said in that link, it plainly says that Black Beauty has 1% or less of free silica. As I said no media is "Safe" but Black Beauty is one of the safer ones and has little to no free silica.
I think Cranky posted the text from the link on Black Beauty.
From the link you provided
[The typical free-silica content is stated to be less than 0.1% (Reed Minerals, 1992).]