where to buy salt and sand?

[muck]

Reef Crystals is not a Kent Product. It is made by the same company that makes Instant Ocean Salt.
I think you are thinking of the Kent Salt Ruth. (Yes its just called Kent Salt )

[Ruth]

Well my bad then because I always thought that Reef Crystals was a Kent product - maybe because Kent and IO used to get manufactured in the same place.
I was one of the (un)fortunate ones a few years back that got the bad IO salt and completely crashed both of my tanks so I will never use it again.
Sorry for the confustion.
For the record I use the Tropic Marin Pro salt and the Seachem Reef salt and am happy with both.