In article , Pszemol
wrote:

Hey, is this sand for sandboxes really clean enough to put
it stright to the reef tank? Do you use any procedure to clean it?

I experimented long ago with a regular silica-type play sand and it was
filthy. I threw it out.

I started a new tank with Southdown recently and it was very clean. It
is, however, extremely fine and your tank will be cloudy for a couple
days until it settles down.

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