Substrate

* Aragonite sand free of impurities such as ash, metals, and pesticides * Use Seaflor Special Grade Reef Sand to create a safe and beautiful aquarium * Functional marine substrate increases buffering capacity of your aquarium CaribSeaBeautiful and versatile Seaflor Special Grade Reef Sand is the perfect substrate for reef aquariums. Use as a gorgeous substate or as a functional substrate for nitrate-reducing systems such as Plenum or Berlin systems. Consistent grade aragonite substrate allows for better dissolution of minerals, like calcium and carbonates. The addition of small shells makes it ideal for aquariums with mature jawfish or burrowing invertebrates. 1.0 to 2.0 mm grain.

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Meridian is an all natural oolitic (spherical or egg shaped) aragonite substrate for all reef and marine aquaria. Meridian is the premium aragonite substrate for the reef aquaria. It's grain size (a fairly uniform 0.25 - 0.50 mm) is ideally suited to reef inhabitants and it's chemical composition will assist in stabilizing calcium and alkalinity while preventing large pH declines. Unlike competing "wet" products marketed under the guise of being "live", Meridian is sold dry, thus you pay only for gravel and not for unneeded water. These products imply that they contain living, microscopic animals when in fact they only contain common bacteria. Dry or wet, there are bacteria on every substrate available. If one is concerned with shortening the aquarium cycle time for a new system, then the use of a product designed for that particular purpose would be more appropriate (such as Seachem’s Stability®).

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Gray Coast Calcite is an all natural calcite substrate for all types of marine, reef and tropical aquaria. Its chemical composition will assist in stabilizing calcium and alkalinity while preventing large pH declines. Simply rinse before use to remove any residual dust. Unlike competing “wet”gravels, Gray Coast is sold dry: this bag contains 35% more gravel than a bag of wet gravel of equal weight. These “wet” gravels are marketed to give one the impression that they contain living, microscopic animals when in fact they only contain common bacteria. Dry or wet, there are bacteria on every substrate. If one is concerned with shortening the aquarium cycle time for a new system, then the use of a product designed for that particular purpose would be more appropriate (such as Seachem’s Stability®).

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Fiji Pink Reef Sand: 0.5-1.0 mm diameter grain size. A gently hued aragonite, CaribSea Seaflor Pink Fiji Reef Sand is ideal for plenum systems, nitrate reduction systems and most fish and reef tanks. Helps achieve the pH of natural seawater. Proves calcium and other essential trace elements like strontium and magnesium. CaribSea Aragonite buffers to the highest pH and delivers more calcium, carbonate, and trace elements than any other substrate. Little or no rinsing required, aragonite keeps aquariums healthier, longer.

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Pearl Beach™ is an all natural aragonite substrate for all types of marine, reef and tropical aquaria. Its chemical composition will assist in stabilizing calcium and alkalinity while preventing large pH declines. Unlike competing “wet” gravels, Pearl Beach™ is sold dry: this bag contains 35% more gravel than a bag of wet gravel of equal weight. These “wet” gravels are marketed to give one the impression that they contain living, microscopic animals when in fact they only contain common bacteria. Dry or wet, there are bacteria on every substrate. If one is concerned with shortening the aquarium cycle time for a new system, then the use of a product designed for that particular purpose would be more appropriate (such as Seachem’s Stability®).

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Create a flawless, natural-looking foundation for your marine or reef aquarium with CaribSea Aragamax Sugar-Sized Dry Aragonite Sand. Also known as "oolitic" sand, this super-fine substrate (0.25 - 1.0mm grain size) is renowned worldwide for its incredible purity. It is intentionally engineered to be completely free of harmful impurities such as ash, metals, pesticides, and silica, ensuring a safe and pristine environment for your delicate fish and invertebrates from day one. Beyond its stunning bright white aesthetic, this sugar-sized aragonite provides immense biological and chemical benefits. It naturally buffers your water chemistry by slowly delivering essential calcium, carbonate, and trace elements to maintain a stable, healthy pH. Because of its remarkably fine, smooth, and round grains, it is the absolute perfect choice for shallow static beds. It is incredibly gentle on soft-bellied bottom dwellers like rays and sharks, and it easily passes through the gills of sand-sifting gobies and invertebrates without causing irritation. Key Features & Benefits Ultra-Fine "Sugar" Grains: Features a uniform 0.25 - 1.0mm oolitic grain size that perfectly mimics natural, soft ocean floors. 100% Pure & Safe: Rigorously tested and guaranteed to be free from ash, metals, harmful pesticides, and silica. Natural Water Buffering: Made of aragonite, which continuously delivers vital calcium and carbonate to safely maintain high pH levels. Perfect for Sand-Sifters: The smooth, tiny grains are gentle on soft-bellied fish and pass safely through the gills of sand-sifting gobies, blennies, and starfish. Supports Biological Filtration: When used as a shallow bed, it provides a massive surface area for beneficial bacteria, aiding in the natural reduction of nitrates.

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Has a typical size between 0.25 mm and 1.0 mm Boasts an average density of 96 pounds per cubic foot Utilizes Sea Breathe laser technology which preserves real live sand with its own original bacteria Boasts unparalleled gas exchange Every grain is coated with bacteria and encapsulated by capillary action in a thin film of real ocean water This live sand utilizes Sea Breathe laser technology which preserves real live sand with its own original bacteria. 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. Every breathable bag of Ocean Direct is alive with up to 1000 times more beneficial bacteria than other preservation methods. 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. 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.

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