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CaribSea Arag-Alive Hawaiian Black Sand 20 lb

$38.99 $23.39Save: $15.60 (40%)

Item #: CS00797

In Stock

CaribSea’s Arag-Alive!™

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.

About CaribSea Live Products
When setting up an aquarium with CaribSea`s live products please do not rinse the substrate! The susbtrate should be carefully placed on the bottom of the aquarium, and your preconditioned water should be added carefully. Cloudiness will be greatly reduced if a plate or empty bag is used to stop the water being added from disturbing the substrate underneath.

FAQ and Tips
Do I rinse Arag-Alive!™ before use?
No! Rinsing Arag-Alive!™ could harm the spored beneficial bacteria in the product.

Can I reseal and store unused Arag-Alive!™ for later use?
Yes, if sealed tightly Arag-Alive!™ will still remain effective for another couple months.

Hawaiian Black Specifications
  • Typical Grain Size: 0.25-3.5mm
  • Average Density: 80 lb/ft

Sand Bed Calculator

Use our CaribSea-powered calculator to find out exactly how much sand you need.

Manufacturer information

At CaribSea we take aquariums seriously. Since 1972 we have supplied hundreds of public aquariums, zoos, aquaculture facilities, public and private institutions, and hundreds of thousands of dedicated aquarists with the highest quality marine and freshwater products. CaribSea has been in the forefront of the principle that substrates are a piece of equirment, not just a decorative afterthought. Caribsea substrates are as precisely engineered as any piece of advanced equipment used by today`s hobbyists and professionals. CaribSea products are the chemical support, biological filtration, and biodiversity backbone for many of the most spectacular aquatic displays ever created. We are now celebrating our 35th year in the business, and our product line has continued to grow; making CaribSea your aragonite source and so much more.

5 Stars


Reviewed on
July 21, 2020

Yes, I would recommend this.

Great Sand

Pros: Larger grains, makes color stand out better than other sand

Cons: Sticks to magnets sometimes

Love the Hawaiian black. It is the third reef tank I have used it in. I like the way it makes the colors pop.

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Reviewed on
May 10, 2020

Yes, I would recommend this.

Looks great in tank.

Pros: Looks great

Cons: Magnetic so you must be careful with megnetic scrapers at sandbed line

Make sure you give this a rinse before throwing it in your tank and it will look beautiful!

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Reviewed on
April 15, 2019

Yes, I would recommend this.

Looks great

I have used this sand on 3 tanks. The black makes the corals pop more. Good grain size on this sand as well. Just be careful with a magnet since these can get caught

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Reviewed on
March 27, 2019

Yes, I would recommend this.

Amazing look

Added this sand to help the cycle process and the look is way better this time around. Just the right enough hint of white with the black sand

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