CaribSea Seaflor Special Aragonite Aquarium Sand, 15-lb bag
CaribSea Seaflor Special Aragonite Aquarium Sand, 15-lb bag; Create a solid base for your reef tank with CaribSea Seaflor Special Grade Reef Aquarium Sand. This substrate is specially designed for use with plenum-type, nitrate-reducing beds (sold separately). It provides highly-dissoluble calcium carbonate and helps your tank maintain a stable pH balance. Each grain is about 10–20 millimeters in size, creating a high-density bed that settles quickly and is easy to keep clean. This sand contains no ash, metals, pesticides or silica.