CaribSea Aragonite-Alive Reef Sand – Fiji Pink
Only CaribSea’s Arag-Alive! Live Sands contains not just the broad spectrum of natural marine bacteria found in the ocean, but additional specially selected strains of marine bacteria as well. Arag-Alive! compresses new tank cycle time and suppresses the initial ammonia spike. Arag-Alive! creates a natural biological balance, making aquarium cycling faster and safer.
Live rocks and most invertebrates can be added immediately. Gradually introduce fish within the first 3 weeks, and do not exceed one inch of fish per 5 gallons during this time.
Product Specifications
| Feature | Detail |
|---|---|
| Color | Fiji Pink |
| Material | 100% Aragonite |
| Grain Size | 0.5 – 1.5mm |
| Weight | 2 – 20 lbs |
| Use | Reef aquarium substrate |
FAQ
Can I add live rocks and invertebrates immediately after adding the sand?
Yes, live rocks and most invertebrates can be added immediately after adding the Arag-Alive! sand.
How long does it take to cycle a new tank with this sand?
The Arag-Alive! sand helps compress new tank cycle time and reduces the initial ammonia spike, making the cycling process faster and safer.
Is this sand safe for fish during the initial setup phase?
Fish should be introduced gradually after the first 3 weeks. Do not exceed one inch of fish per 5 gallons during this period.

Ella Scott –
The sand settled well in my reef tank and the water parameters stabilized quickly. I was able to add live rock right away and noticed less ammonia spikes than expected. The pink color is subtle and natural-looking.
Emma Slater –
Great product for beginners. The sand is easy to work with and the bacteria helped my tank cycle in just two weeks. I added snails and corals right after installation.
Eric Martin –
I’ve used several substrates before, but this one stands out for its consistent grain size and color. It’s perfect for a mid-sized reef tank and the biological balance is noticeable from day one.