Ooids are spheroidal grains with a nucleus and mineral cortex accreted around it which increases in sphericity with distance from the nucleus. Most oolites are limestones ooids are made of calcium carbonate (minerals aragonite or calcite ). Ocean Direct provides a thriving, natural aquarium in minutes! The 5 pound bag of Ocean Direct Live Oolite has a typical grain size between 0.25 mm and 1.0 mm and features an average density of 96 pounds per cubic foot. Oolite is a sedimentary rock made up of ooids (ooliths) that are cemented together. Each bag includes a packet of Bio-Magnet clarifier to reposition free-floating bacteria to where they are most active sand beds, live rock surfaces, and to biological filtration media. ![]() Every breathable bag of Ocean Direct is alive with up to 1000 times more beneficial bacteria than other preservation methods. You can now bring the worlds most exotic reefs into your home with CaribSeas Arag. Every grain of Ocean Direct is coated with bacteria and encapsulated by capillary action in a thin film of real ocean water that is open to the atmosphere for unparalleled gas exchange. CARIBSEA ARAGONITE BAHAMA OOLITE LIVE SAND 20lb / 9 Kg. Find many great new & used options and get the best deals for Arag-Alive Bahama Oolite Sand in Bahama Oolite Set of 2 - 20 lb Packages / 40 at the best. This live sand utilizes Sea Breathe laser technology which preserves real live sand with its own original bacteria.
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