Activated Carbon as Substrate

[erinw621]

As a few mentioned before.. it will definitely float, especially if you make the grains any smaller. And if I had to guess, when you vacuumed it would probably all get sucked in. Good luck, happy hunting.

 

[cubequeen]

Black glass beads? Aren't a lot of beads made in India?

 

[biggdadyapisto]

i think nagukush wants fine grain sand like substrate.

 

[Slappy*McFish]

I'd try here: http://www.aquariumsands.com/ProductDetails.asp?ProductCode=2000S4
Not sure if they'll ship to your part of the world, but create an account and see. The shipping is free.