ellisz said:Looks like normal silica based sand. Meijer sells a nice white silica sand as well. Don't think I would do a DSB wth silica though. It will be harder on the organisms/critters to do a good job of sifting since the edges are sharp.
Somone correct me if I am wrong...
i tested it with vinegar and it was argonite that is why i have a deep sand bed....