southdown

[Dace]

is southdown the brand name or is that a general name of the sand where several different companies make it.

and is home depot the only store that carries it

[oscar c]

yes,brand name you can find it in the gardening section in HD.

[colemanitis]

Here's a picture of what you're looking for.

http://colemanitis.com/reefcentral/southdown.gif