Caribsea Arag-Alive Bahamas Oolite Aquarium Sand, 10-Pound You can now bring the world's most exotic reefs into your home with CaribSea Arag-Alive It is developed from CaribSea cooperation with public aquariums and zoological parks, where authenticity is a must Arag-Alive helps maintain a proper pH for the life of your aquarium without the constant addition of chemicals