I have some of the black beauty sand blasting media that I am going to try using in my next setup ~ if I ever find the time to get it started . . . I ran some tests on it and found no problems with the batch I have, but am not sure how consistent it is from batch-to-batch. As Over_Stocked mentioned, do some research to see what others experiences with it have been and you will probably want to run some of your own tests on it also, just to be sure.
It does make a beautiful substrate especially in a planted tank. (I think it looks even better when it is in the aquarium than it does when it is dry!) However, as Brad pointed out, it is sharp and would not be the most appropriate choice for bottom dwellers so plan your stocking carefully.
Gook luck, and let us know how it turns out for you!
Brain Dead . . .