CaribSea Arag-Alive Live Aragonite Reef Sand, Fiji Pink, 20-lb bag

  • List Price:


  • Price:

    $18.48 FREE 1-3 dayShipping over $49

  • You Save:

    $9.51 (34%)

In stock
cw-icon-heart Created with Sketch. Add to Favorites

Bring the world’s exotic reefs into your home with the CaribSea Arag-Alive Live Aragonite Reef Sand. Developed in cooperation with public aquariums and zoological parks where authenticity is a must, it’s formulated with authentic live aragonite reef sand from wild marine environments. The ready-to-use sand is naturally packed with minerals like calcium and strontium to promote coral growth, plus beneficial, specially-selected water-purifying bacteria to reduce waste, ammonia and algae, and help maintain the ideal pH level in your tank. Use it to suppress “new tank syndrome” and keep your aquarium running smoothly. Best of all, you can use it straight from the bag for quick cycling, without rinsing or additional chemicals.

Key Benefits
  • 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.

See all items by CaribSea

  • Item Number
  • Weight
    20.0 pounds
  • Aquarium Type
  • Brand
  • Fish Type
    Marine Fish

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.

Aragonite Elemental Assay

Calcium381,000 PPM
Carbonate590,000 PPM
Strontium7,390 PPM
Magnesium1,050 PPM
Molybdenum56 PPM
Potassium56 PPM

As well as Barium, Manganese, Iron, Sulfur, and Other Essential Trace Elements.


For best results, use at least 1 pound of Arag-Alive per gallon of seawater. For deep sand beds use 2 pounds per gallon. Do not rinse. Arag-Alive compresses new tank cycle time and suppresses initial ammonia spike. Live rocks and most invertebrates may be placed in aquarium immediately. However, gradually introduce fish within the first 3 weeks, and do not exceed one inch of fish per 5 gallons of water during this time.

Placing new substrate over the top of an established substrate bed can be damaging to aquatic life. Gently mix new material into the existing bed with fingers. For added safety, this process can be done in sections, over the course of a few days.

Typical Sand SizeAverage Density
0.5 - 1.5mm90 lbs per cubic foot
Rating: 4.1 of 5 stars 5 Reviews 5 Reviews 4.2 out of 5 Stars

Filter reviews by star rating

80% Recommend

80% of reviewersrecommend this product

Rating: 4.1 of 5 stars 4.2 / 5

You've Already Reviewed This Item

5 Reviews

Showing 5 Reviews

  • 1 out of 5 stars

    Spent money for nothing

    By Noway on Nov 28, 2020

    My delivery SUCKS! I ordered Figi Pink sand and got regular off white sand...thanks for nothing!

    You liked it! Something went wrong. Please try again later. Report
  • 5 out of 5 stars

    Can not complain

    By Jayy on Oct 29, 2019

    Excellent product. Came sealed tight. Still had water in bag. Put in tank filled with water. Barely any clouding. Ran tank for. 3 days put a yellow tail damsel in doing great so far. Definitely will be using this sand from now on.

    You liked it! Something went wrong. Please try again later. Report
  • 5 out of 5 stars

    The only sand I use!

    By Ryan on Sep 14, 2019

    Caribsea is always great. Perfect grain size, consistent every time...I see no reason to use any other brand.

    You liked it! Something went wrong. Please try again later. Report
  • 5 out of 5 stars

    Exactly What I Wanted

    By Jacob on Oct 19, 2019

    Came VERY quickly and was exactly what I wanted. Looks beautiful in the tank.

    You liked it! Something went wrong. Please try again later. Report
  • 5 out of 5 stars

    Carib sea sand

    By Bean on Mar 7, 2019

    Loved this sand. Not quite as tiny as beach sand so it doesn't move around much. The cleaning crew loves it.

    You liked it! Something went wrong. Please try again later. Report