Originally posted by DoxBoi
People use playsand in their tanks?
Yes they do. Mostly silica playsand and those that are calcium carbonate based like Southdown, Yardright and Old Castle playsands.
What do you think your glass tanks are made out of?
Southdown has a variety of grain sizes that make a very good mix for a sand bed, and since it is ootlic, aragonite, cheap, and the fact that it is a bright white in the tank, it is the prize that many seek to keep cost down, and have a beautiful substrate.
Thomas