well this is the info i found for the description:
Aragamax Grand Bahama Sand:0.2-1.2mm majority grain size, but with additional bits of reef sand and small shells to recreate the Carribean reef "Rubble Zone". The larger bits of aragonite not only add color and texture, but allow burrowing organisms to buttress their tunnels and prevent collapse.
so this is for fish only....is this not necessary, is something better? i am looking for some sand that is not plain, i thought the shells made it more interesting...any suggestions on a beneficial, but "pretty" sand? (i like pink fiji sand, but it never really looks pink in the tank....)