Bring your reef to life from day one with CaribSea Arag-Alive! Reef Sand and Fiji Pink—the gold standard in live aragonite substrates trusted by reef keepers worldwide.
🔹 Why Choose Arag-Alive?
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Pre-seeded with live marine bacteria – jump-starts your biological filtration and helps prevent the dreaded “new tank syndrome.”
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Maintains natural pH – stabilizes marine aquarium chemistry thanks to its high-purity aragonite composition.
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Enhances biodiversity – contributes beneficial microorganisms that establish a healthy and stable reef ecosystem.
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Scientifically proven – Arag-Alive sands are backed by independent university studies demonstrating their effectiveness in reducing nitrates and establishing biological balance.
🔹 CaribSea Fiji Pink
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Grain size: 0.5–1.5 mm
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Unique color & texture – a delicate pink hue mixed with fine white aragonite grains for a natural reef look.
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Perfect for reef tanks – small grain size is ideal for burrowing fish and invertebrates, while remaining stable enough to prevent excessive shifting in high-flow aquariums.
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Aesthetic appeal – provides a bright, clean sandbed with subtle pink highlights that enhance coral and rock coloration.
🔹 CaribSea Arag-Alive! Reef Sand (Special Grade)
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Grain size: 1–2 mm
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Optimal for strong flow tanks – slightly larger grain reduces cloudiness and resuspension in aquariums with powerful circulation.
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Natural buffering capacity – helps maintain calcium and alkalinity levels in reef aquariums.
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Proven live bacteria – each bag contains millions of heterotrophic, autotrophic, and chemolithotrophic bacteria for rapid biological cycling.
✅ Key Benefits
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Instant cycling support with live bacteria
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Natural aragonite composition – safe for all marine life
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Helps maintain stable pH and essential parameters
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Available in multiple grain sizes and colors to suit your aquarium style
📦 Packaging
Both Fiji Pink and Reef Sand are sold in 20 lb (9.07 kg) sealed bags, pre-washed and water-packed to preserve live bacterial cultures.
👉 Perfect whether you’re starting a brand-new reef tank or refreshing your current sandbed, CaribSea Arag-Alive sands deliver both beauty and biology in one simple step.