is this stuff reef safe ? CaribSea Tahitian (black) moon sand

[Nano]

When I bought it it didnt say reef safe on the bag. But I took a chance anyway. It says aquarium safe just not saltwater safe. So I think its kind of a "buyer beware" type of situation. I suffered no ill effects aside from the oxidizing in my tank and magnetism. I personally asked many people on many forums their experience with it and no one told me of any crashing etc. Just the same issues I reported here.