Hawaiian Black Arag-Alive! Live Reef Sand

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20 lb. Hawaiian Black Arag-Alive! Reef Sand

SKU: 207429

In stock


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Live sand is a great choice for new reef tank setups as it clears quickly and contain millions of live bacteria, speeding up your tank's cycle. Unlike other sand choices for saltwater aquariums, which typically come in tan or beige hues, Hawaiian Black sand is unique for its almost entirely black color. The result is a striking contrast between the substrate and the colorful fish and coral within the aquarium.

  • Contains Live Bacteria to Assist with a Faster Cycle
  • Grain size: 0.25 - 3.5mm
  • High Surface Area for Bacteria
  • Ready to Use - No Rinsing

Note: Hawaiian Black sand may contain some magnetic particles, so it's important to use care when using magnetic glass cleaners near the sand bed.


How Much Sand Do I Need?

Use our Sand Bed Calculator for an easy way to find out how much sand you need for your exact aquarium dimensions.



Arag-Alive Sand Type Grain Sizes (mm) Description

Fiji Pink

0.5 - 1.5 Small uniform grain size with flecks of pink quartz. Ideal for tanks with sand-sifting inhabitants and low to medium amounts of flow.

Special Grade

1.0 - 2.0 Our best-selling sand mix. Uniform medium grain size good for tanks with medium amounts of flow and still sand-sifter friendly.

Bahamas Oolite

0.25 - 1.0 Fine uniform grain size. Ideal for low flow aquariums.

Hawaiian Black (Currently Viewing)

0.25 - 3.5 Semi-uniform grain size. Creates a striking contrast with colorful fish and coral in the aquarium.

Bimini Pink

0.5 - 5.0 Wide variety of particle sizes.

Florida Crushed Coral

3.0 - 5.5 Large particle sizes. Ideal for high flow aquariums, but not great for sand dwelling inhabitants.


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Product Questions

Can this be used in fresh water aquariums?
Question by: sheryl on Nov 3, 2017, 11:51 AM
Hi Sheryl, thanks for reaching out.
Provided you aren't using this sand in a tank with fish that require low pH or soft water you should be fine. Just remember to rinse it well since this is package in saltwater!
Answer by: Nick on Nov 25, 2017, 12:47 PM
Is this sand to course for sand sifters. I so are there any other options?
Question by: John on Apr 29, 2017, 2:06 PM
Hey there,
This sand has a wide range of grain sizes mixed in, but should be fine for the majority of sand sifters. If you prefer a more uniformly small grain size, the Fiji Pink is another great option.

Happy reefing!
Answer by: Zack on May 2, 2017, 12:56 PM
This bag is larger than my tank needs. If I take some out, can I save the rest for later? How should I store the sand after is has been opened?
Question by: William Deich on Jan 24, 2017, 12:58 PM
Great question! You can store sand indefinitely, however the bacteria that is in the sand may not survive. You can still use the sand in the future, you will just have to allow the tank to cycle and repopulate the sand with beneficial bacteria. :-)
Answer by: Randy on Jan 28, 2017, 7:40 AM
What are the benefits to black vs white live sand?
Question by: William Deich on Dec 24, 2016, 11:35 PM
Great question! The biggest difference will be mostly aesthetics between the two. As far as their ability to house beneficial bacteria, their surface area will be very much similar. :-)
Answer by: Randy on Dec 26, 2016, 3:56 PM
I bought a bag of this stuff can I add in my reef tank if I already have inhabitants such as fish coral ect.? Help! Please
Question by: alan on May 3, 2014, 6:11 PM
Hi Alan,
Its certainly possible to add sand to an existing tank though it is a bit messy. The best thing to do is is fill a cup with sand, lower it all the way down to the bottom of the tank and then pour it out. It will help keep as much sand from blowing around.
Answer by: Bulk Reef Supply on May 3, 2014, 6:11 PM
BRS, I have a question about your Caribsea Hawaiian black reef sand. I had seen this product in local aquarium shops and it appeared to be a mixture of black and white particles. I am curious if the product you are selling here on the website is the same as I've seen in the shops. I would like a substrate of pure black particles only. Can you describe what this product looks like? Are there any white particles mixed into this product? Thanks, John
Question by: John on Oct 27, 2013, 12:42 PM
Hey John,
I happen to have this sand on the tank sitting on my desk. It is like the other sands you have seen, a mixture of black and white (and I would say a few redish brown) particles. I haven't seen a purely black one myself but that does sound cool!
Answer by: Bulk Reef Supply on Oct 27, 2013, 12:42 PM