• Caribsea
  • Marine Substrates

Arag-Alive Hawaiian Black

SKU: CS-797

Caribsea’s Hawaiian Black Arag-Alive! Live Reef Sand is a great choice for new aquarists and new reef tank setups. Arag-Alive sands clear quickly and contain millions of live bacteria, speeding up your tanks cycle and leading to less nuisance algae.

  • Contains live bacteria to assist with a faster cycle.
  • Grain size: 0.25 – 3.5mm.
  • Most popular size for reef sand.
  • High Surface Area for Bacteria.
  • Great choice for new aquarists.
Bring the world’s most exotic reefs into your home

You can now bring the world’s most exotic reefs into your home with CaribSea’s Arag-Alive!™ substrates. Eight environmentally accurate ecoscapes, developed through CaribSea’s cooperation with public aquariums and zoological parks where authenticity is a must, Arag-Alive!™ makes any aquarium uniquely yours. Arag-Alive!™ makes it easy to set up an aquarium. It’s ready to work, clears quickly, and contains millions of live bacteria to cycle super fast and create a natural biological balance.

Arag-Alive!™ suppresses the dreaded “new tank syndrome”, compresses the ammonia cycle, and discourages nuisance algae. In fact, independent labs prove Arag-Alive!™ cycles days faster than other brands of live sand. That’s what makes Arag-Alive!™ the choice of new aquarists and maintenance companies where speed of set up, beauty, and reliability are demanded.

Key Benefits of Arag-Alive Hawaiian Black

Made from authentic live aragonite reef sand to naturally re-create actual marine environments in your home aquarium. Biologically and mineralogically complete formula is proven to reduce nitrates and algal growth, speed the cure of live rocks, and promote coral growth.

With millions of water purifying bacteria per pound that start to cycle a new aquarium as soon as you pour it in, with no rinsing. Helps suppress new tank syndrome, compress ammonia cycles, and maintain a proper pH of 8.2 without adding extra chemicals or needing to be replaced.

Packed in real seawater and loaded with naturally occurring calcium, strontium and carbonate for healthy coral growth, with no silica or chemical preservatives.

Arag Alive Hawaiian Black - Product Information

Biologically and mineralogically complete sand substrate for saltwater aquariums. Contains specially engineered bacteria to suppress new tank syndrome. Discourages nuisance algae. Never needs replacement.

– Aids in the growth of corals.
– Buffers for the life of the aquarium.
– Helps maintain a proper pH of 8.2 without constant chemical additions.
– Discourages nuisance algae growth.


Biogenic Aragonite and Other Marine Carbonates Greater Than 99%. Comprised of Aragonite Coated Grains, Ooids, Halimeda Incrassata, Halimeda Favulosa, Goniolithon SSP, Lithothamnium SSP, Cerithidae SSP (Gastropod Mollusk), Benthic Foraminifera SSP, Homotrema Rubrum Pelecypoda (Bivalve Mollusk), Echinoderm Fragments.


Typical Sand Size: 0.5 – 1.5MM, Average Density: 90 lbs per cubic foot