All prices included VAT 24%. When you add address to checkout, you will see corrected price according your destination.




Caribsea Aragalive Hawaiian Black 9kg ( 0.25-3.5mm )

Send information when back in stock

CaribSea Arag-Alive!™ - for authentic living spaces
  • -Six types of real live sand - untreated directly from the reef
  • -Chemoautotrophic and heterotrophic strains of bacteria
  • -Biological equilibrium within the shortest time
  • -Step into action as soon as the pH value falls below 8.2
  • -special biological activity (scientifically confirmed)

A beautiful piece of nature at home: Create your own unique reef aquarium!

Do you dream of the dark blue shimmering Maro Reef off Hawaii or the colorful Rainbow Reef of the Fiji waters? With the multifaceted selection of Arag-Alive!™ substrates from CaribSea you can make your dream come true and recreate the world's most beautiful reefs in your home. The unique sands of CaribSea were developed in cooperation with public aquariums and zoos. Six environment-friendly composed bottom substrates make every aquarium a real eye-catcher. Arag-Alive!™ accelerates the cycling phase of your aquarium, because thanks to its special marine bacteria you will establish a stable biological balance in your aquarium in a short time.

Wide spectrum of marine bacteria for a safe cycling phase

Whether crystal clear, cheerful pink or volcanic black shimmer - CaribSea Arag-Alive!™ provides you with a spectacular selection to make your individual aquarium dream come true. The six different types of sand come directly from the natural reef ecosystem, where they are extracted in an environmentally friendly way. Arag-Alive!™ is ideal for both beginners and professionals. Choose from different reef ecosystems and authentically recreate the respective habitat. With coarser grains you also offer your digging animals a species-appropriate home. The unique color variety of the near-natural substrates as well as the different grain sizes enable you to create extraordinary water worlds.

Bring an authentic and fascinating reef to life!

With CaribSea Arag-Alive!™ substrates you can quickly and safely create a stable reef ecosystem. This live sand is much more than just beautiful, real reef sand. With over 400 million bacteria per bag, you will run your pool with a wide range of natural marine bacteria. Arag-Alive!™ sand helps to control the dangerous ammonium content and even reduces nitrite and nitrate levels in the water. Living stones can settle in faster and grow better. Arag-Alive!™ from CaribSea also contains other specially bred strains of marine bacteria. Innumerable heterotrophic, autotrophic and chemolithotrophic bacteria help in the running-in phase and still long beyond. The excellent biological activity of the substrate is also confirmed by independent laboratories.

Aragonite - unique sand from nature

Aragonite is found as a purely natural product on the Bahama Banks, where it is formed during the metabolism of algae and bacteria. It precipitates as a result of a biochemical process and floats above the Bahama Banks, where it sinks to the sea floor. Every year, almost 2 billion kilograms of new aragonite are created in this way. In the natural form we offer, aragonite is a thoroughly sustainable product.

Why oolitic sand is ideal for your aquarium ecosystem

With aragonite sand you create the best conditions in your saltwater aquarium so that its inhabitants feel well, thrive and stay healthy. Because it has something decisive which calcite or dolomite do not have: Its natural oolitic (egg-shaped) grain makes this sand pleasantly soft. This makes aragonite sand suitable for digging animals such as gobies, crabs and sea cucumbers. But also hard corals and "difficult" plants, such as tall sea grass, grow particularly well in it. The natural, round polished reef sand is perfectly suited for method of the "Deep Sand Bed" (DSB).

The highly porous aragonite is available in various grain sizes, with the smallest grains being less than one millimeter in size. These tiny grains of sand offer the great advantage of more surface area for bacterial colonization than other sand. Aragonite in a cube of one cubic centimeter has a surface area of an incredible 8000 square meters! That much biomass means that aragonite is unbeatable in the reduction of nitrates, nitrites and ammonia.

Recommended by Triton and other marine biology institutes.

Experts repeatedly stress the importance of aragonite as a substrate. As in its marine home, aragonite also comes into action in your tank as soon as the pH value falls below 8.2, the value of natural seawater. This is because when the water becomes acidic, the substrate dissolves, releasing minerals and trace elements such as calcium, strontium, magnesium and iodine. Corals absolutely need these substances to form their skeleton. The pH value then returns to normal and your aquarium remains stable. All natural and without chemical additives. This is one of the many advantages of aragonite over calcite or dolomite.

Only aragonite can do this too: The "miracle mineral" has a 30 times higher filter capacity than purely decorative sand such as calcite or dolomite. Anyone opting for sustainable aquaristics chooses aragonite from the very beginning. In contrast to other substrates, you hardly ever have to replace real reef sand and you save lime water and calcium reactors. Just add a little sand if necessary and enjoy your unique stable ecosystem in the aquarium.

Natural from the ground up - environmentally friendly and sustainably extracted

On the sandbanks at the coral reef you can see the fascinating cycle of nature: they are constantly forming new ones. Aragonite from CaribSea comes exclusively from self-renewing sources (Bahama Banks). Here the sand is extracted in an environmentally friendly way and comes to your home free of heavy metals, pesticides or other pollutants, but full of good and natural substances. Use sustainably extracted sand from intact reef ecosystems and start with the most natural substrate in the pool. For the love of nature. For the love of your hobby, seawater aquaristics.

Aragonite sand in a current tank: no contradiction!

Aragonite sand from CaribSea is available in many particle sizes. Choose the appropriate grain size and composition for your aquarium and thus recreate the chosen habitat as authentically as possible.

By the way, it is not true that aragonite blows more strongly with the current than calcite or dolomite. The degree of blowing is equally dependent on the grain size of all substrates - the lighter the particles are, the easier they blow.

CaribSea offers you a wide range of aragonite sands - from very fine to particularly coarse grain sizes. The bandwidth ranges from 0.25 mm to 50.0 mm. Simply choose the optimal solution for your habitat and tank size.

Payment methods:

  • Bank payments: All finnish banks have payment buttons at their disposal.
  • Credit card payments: You can pay online with PayPal, Visa, Visa Debit, Visa Electron, MasterCard, Debit MasterCard and American Express cards. The online store uses international Verified By Visa, MasterCard SecureCode and American Express SafeKey authentication services. 
  • Mobile payment methods: MobilePay and Apple Pay  
  • Invoice and installment services:  services are provided by Klarna and through Paytrail by Collector and Jousto.

We deliver orders in the following ways:


  • Your order will be delivered as a Postal package. Delivery costs in Finland 4,90€ when the purchase value is 1-29,99€. When the purchase value is 30€ or more, the delivery costs are free max 30kg.
  • In addition, you can choose home delivery in Finland for 9€/delivery.
  • Our most common delivery times to Finland are 1-3 business days from the time of ordering, depending on the order and delivery method. Note! Does not apply to custom-made products.
  • For postal parcels, the tracking ID is automatically sent via email when the order is left from our logistik center.


  • Your order will be delived as GLS standard. Delivery cost will be seen in products page when you add the products to your shopping card.
  • Our most common delivery times in EU area is 2-4 business days from the ordering, depending on the order. Note! Does not apply to custom-made products. Please note ! If the product is out of stock in our own warehouse, the normal delivery time is usually max 10 business days. 
  • For GLS parcels, the tracking ID is automatically sent via email when the order is left from our logistik center.


  • your order will be delivered as DHL Express. Delivery cost will be seen in products page when you add the products to your shopping card.
  • Our most common delivery times outside of EU areas is 2-4 business days from the ordering, depending on the order. Note! Does not apply to custom-made products. Please note ! If the ordered product is out of stock in our own warehouse, the normal delivery time is usually max 10 business days. 
  • For DHL Express parcels, the tracking ID is automatically sent via email when the is left from our logistik center.
  • On heavy orders additional cost will be applied.
  • All products prices are VAT:0% with outside EU orders, if checkout is not automatically give these prices, please send email:
  • Extra custom duties may be applied in all orders outside EU area

Exchange and return policy in: Finland, Sweden, Estonia

  • You have the right to exchange or return all or part of your order within 14 days of receiving the order. Note! does not apply to ordering and custom made products.
  • The right of return only applies to unused and salable products with product labels in the original packaging.
  • The subscriber is responsible for paying the refund. The return fee in 5,90€.

Unclaimed shipment

  • We deliver all orders by post. Posti stores packages for 7 days at all its pick-up points. If the package is not picked up during this time, it will be returned to the sender. An unclaimed shipment is not a return under the Consumer Protection Act. In these cases, we will automatically charge 15€ for postage and handling in connection with the refund.

According to the return, include the following information:

  •  a copy of the Aqua Nomad order confirmation

Return address:

  • The return address varies depending on the product to be returned, please contact us before returning
  • We do not accept returns more than 14 days after delivery. Once the refund is accepted, the money will be refunded directly to your account upon receipt and processing of the refund.

Problem situations during transport and for defective products:

  • If the product has been lost during transport, damaged or the wrong product has been deliveded to the customer, the customer must report the error immediately to
  • Notification of incorrect delivery or defective product must be made within 14 days of receipt of the product. If the package is damaged in the mail, a complaint must be made about the product to the post office immediately.