Aqua Pro Sand - Technical Information 1.Mainly made up of CaCo2 2.Long and needle like(acicular) crystals Differing from calcite of stubby or dog-tooth-like 3.Drives up all the concentrations of ionic by its attractive evaporation 3.Increase the ionic ratio(Mg:Ca=2.9:1) and deposit aragonite Usage: 1.Recommanded 1to 1/2 pounds per gallon for 2 inches a sand layer. 2.Suit for reef aquarium and recommended for fish tank with strong external filtration, or under gravel filtration. 3.Place the sand in a large plastic bag, submerge it to the bottom of the tank, slowly release the sand to area of the bottom and smooth gently the sand . Let it be for an hour and rinse the mechanical pre-filter. 4.Package in 101bs, 201bs and 301bs. Why choose Coral Reef Live Sand ? 1.Contain more than 10,000,000 heterotrophic, autotrophic , and chemolithophic bacteria. 2.Contains kinds of essential trace elements for marine life. 3.Support 23,000 porous square inches for per cubic inch for bacteria. 4.Remove nitrogen based waste and few phosphate and silica. 5.Support beneficial worms and crustaceans for fish. 6.Maintain the pH in your aquarium to create anatural biological balance by heterotrophic bacteria. 7.Cycle a new aquarium faster and safely and lot more Aqua Pro Products.