Some people have heard about Southdown Sand at Home Depot
and inadvertently bought the regular ole silica, very very dirty
construction
sand not knowing the difference at purchase, thinking they have bought
what they heard about (Southdown)......

John Cassara wrote:

I have 75lbs of the Home Depot "Tropical Play Sand" in my reef tank. It is
full of critters, it stays milk white, the fish, snails etc all play in it
and it has the gas bubbles evident of denitrification. I did not even seed
it with live sand from LFS! So what's wrong with it in your opinion?



--
Ric Seyler