CaribSea Aragonite-Alive Reef Sand 4-10lb Bags – Case
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.
Fiji Pink Sand Details
This soft pink colored, 100% aragonite substrate is a good intermediate sand size product. The precise 0.5 – 1.5mm grain size combines some of the animal-friendly properties of fine sand, such as ingestability and low resistance to movement.
| Product Type | Aragonite-Alive Reef Sand |
|---|---|
| Color | Fiji Pink |
| Grain Size | 0.5 – 1.5mm |
| Weight per Bag | 4-10 lbs |
| Case Packaging | Multiple 4-10lb bags |
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 due to the established biological balance.
How long does it take to cycle a new aquarium with this sand?
The sand helps compress new tank cycle time and suppresses the initial ammonia spike, making the cycling process faster and safer, though full stabilization may still take several weeks.
Is the sand safe for fish during the initial setup phase?
Yes, the sand is safe for fish when introduced gradually after the first 3 weeks, with no more than one inch of fish per 5 gallons during that period.

Sam Pullman –
The sand settled well in my 55-gallon reef tank. I added live rocks right away and noticed a much smoother cycling process. The pink color is subtle and natural. Fish were added after three weeks with no ammonia spikes. Highly recommended for beginners.
Joshua Fraser –
Great product for establishing a stable environment. The grain size is perfect for my corals and invertebrates. I didn’t have to wait long for the tank to stabilize. Only issue was a bit of dust when first unpacked, but easily cleaned.
Blake Springer –
Used this in a new tank with a mix of shrimp and clams. The sand helped maintain water quality from day one. No fish were added until week three, and the system stayed balanced. Very effective for reef setups.