This Nature’s Ocean Bio-Activ Live Aragonite Sand is collected and packaged in its natural state, ready to jumpstart marine tank biology.

Natures Ocean Live Reef Substrate 8 Lbs

Premium LIVE Aragonite Sand for Aquariums. Benefits of Nature's Ocean® Bio-Activ Live Aragonite Sand: •Collected in its natural environment and packaged in its natural   state (U.S. Patent 's: 6,376,299 & 6,939,708) •Just place in tank, add saltwater (for best results use   NutriSeawater®) then add fish, no waiting required. •Instant ammonia cycling •Perfect for Undergravel filters •Contains natural live marine bacterial biofilm •Superior to cultured live sand products Recommended: Use a minimum of 1lb Bio-Activ Live Aragonite Live Sand per gallon of saltwater. Set up an appropriate filtering system and allow it to circulate. During the first month introduce no more than 1" of fish per 5 gallon saltwater. Grain size : 1.0 - 2.5 mm