Oolitic Aragonite 10lb Aquarium Sand For Reef Saltwater & Marine Tanks Calcium

• Unsurpassed buffering capability - keeps pH at a stable 8.2

• 98% pure calcium carbonate - no impurities like other sands

• Naturally renewable oolitic aragonite from a sustainable source

• Pisces is the only company that has a lease with The Bahamian government to harvest aragonite