Aragonite Dry Marine Gravel #4 20lb 2pk

<h3>World Wide Imports Ent. , Inc. - Nature's Ocean Premium Marine Substrate</h3><P>Aragonite Gravel #4</P><P>Premium Aragonite Reef Substrate:</P><P>Ideal for reef system tank bottoms, denitrifying anaerobic beds, extremely high surface area filter media. </P><P>Aragonite Benefits:</P><P>Reduces Nitrates. Maintain pH. Increases Carbonate Hardness. Provide Marine Trace Elements. Pre-washed Minimum Rinse Required. 100% From The Ocean Floor. Heat Sterilized. Ideal for culturing Live sand. </P><P></P>Grain size 1. 72. 5mm Packaged 2 - 20 lb Bags per case Net Weight - 40 lbs