CaribSea's Special Grade Arag-Alive! Reef Sand offers a natural look and the perfect particle size for maintaining a thriving reef aquarium. Its special grade formula is designed to reduce detritus buildup and promote efficient water flow, ensuring optimal conditions for coral and invertebrate health. This reef sand is not just aesthetically pleasing; it's functional, fostering an environment where beneficial bacteria can flourish, contributing to a natural filtration system that keeps your tank clean and balanced.