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 ).

• Natural calcite for all types of marine, reef, and tropical aquaria
• Assists in stabilizing calcium and alkalinity
• Helps prevent large pH declines
• High in magnesium
• Maximizes color of marine fish

Gray Coast Mineral Composition

Units=ppm, source: Plasma Emission Spectrometer, EPA Method 3050, Univ. of Georgia Chemical Analysis Lab

Available Size: 3.5 kg