CaribSea Arag-Alive Special Grade Reef Sand 10kg CaribSea Arag-Alive Special Grade Reef Sand is a premium natural aragonite substrate designed specifically for marine and reef aquariums. It is infused with live beneficial bacteria to help quickly establish biological filtration and reduce aquarium cycling time. The special-grade grain size offers excellent water flow through the substrate while remaining heavy enough to resist shifting caused by strong currents and wave makers, making it ideal for high-flow reef systems.

This aragonite sand naturally buffers pH and helps maintain stable alkalinity and calcium levels, creating a healthy environment for corals and marine life. Safe for fish, invertebrates, and sand-sifting species, Arag-Alive Special Grade Reef Sand provides a clean, natural reef appearance while supporting long-term water chemistry stability. Easy to use and ready straight out of the bag, CaribSea Arag-Alive Special Grade Reef Sand is an excellent choice for reef aquarists seeking performance, beauty, and biological support in one substrate.

You can now bring the world’s most exotic reefs into your home with CaribSea’s Arag-Alive substrates. It is developed from CaribSea’s 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, and creates a biological balance to discourage nuisance algae. Arag-Alive contains millions of bacteria per pound specially engineered for aggressive waste reduction in closed systems like your aquarium. Arag-Alive is engineered to suppress ???new tank syndrome??? and compress the ammonia cycle. It begins to cycle your aquarium instantly. In fact, independent labs prove Arag-Alive cycles your aquarium days faster than other brands.