CaribSea Arag-Alive Substrate Special Grade Reef Sand, 10 lb – Instant Cycling & Biofiltration

Bring Exotic Reefs Home

CaribSea Arag-Alive Substrate Special Grade Reef Sand brings a reef-inspired look and practical biology to your tank. Developed through collaboration with public aquariums and zoological parks, its design emphasizes authenticity and dependable performance for a natural, vibrant display.

In closed aquarium systems, waste builds up quickly. Arag-Alive introduces a robust microbial community that supports biological filtration, helps keep conditions stable, and may reduce the need for constant chemical adjustments. It is formulated to begin cycling your aquarium quickly, with independent testing suggesting faster cycling compared with some competing substrates.

What Arag-Alive Does For Your Tank

The substrate contains millions of beneficial bacteria per pound engineered to suppress nuisance waste and support a balanced system. This microbial layer works with your filtration and water chemistry to promote healthier water parameters and a more forgiving startup phase for new tanks.

How to Use It Across Setups

Versatile enough for marine environments, African cichlid displays, and most freshwater aquariums, Arag-Alive provides a natural base for a wide range of inhabitants, plants, and décor. Whether you aim for a reef-inspired look or a peaceful community setup, the sandy bed offers a visually pleasing foundation while supporting beneficial biological activity.

• May also be used in marine or African cichlid aquariums
• Contains millions of beneficial marine bacteria to enhance biological filtration
• Ideal for most freshwater aquaria, including discus, tetras, angelfish, water turtles, rays, plants, cichlids and more

Beyond aesthetics, the sand’s texture and surface area encourage bacterial colonization and a more stable microbial ecosystem. The reef-grade composition helps create a natural backdrop for rockwork and coralline structures, supporting a visually striking and balanced display. As with any setup, ongoing maintenance and compatible equipment remain important for long-term success.

• Intended for fresh and marine setups with appropriate parameter management
• Supports a broad range of species and plant life with a robust biofiltration foundation
• Facilitates a quicker, more forgiving startup while promoting natural balance

Note: Benefits described are based on observed performance in controlled tests and aquarium applications. Individual results may vary with tank size, bioload, and maintenance routines.