<P>Premium Atlantic Crushed Coral with Aragonite &#035;4</P><P>Benefits of Atlantic Crushed Coral:</P><P>100&#037; from the Ocean Floor&#046; Natural crushed coral gravel&#046; Maintains superior pH and marine chemical balance&#046; Provides maximum surface area for biological nitrification&#046; Scientifically graded for uniformity which provides maximum water flow and aeration&#046; Prevents anaerobic Dead Spots in Bacteria bed&#046; Completely chemical free&#046; Pre&#045;washed (minimum rinse required)&#046;</P><P></P><ul><li>Grain size 2&#045;3&#046;5mm</li><li>Packaged 2 &#045; 20 lb Bags per case</li><li>Net Weight &#045; 40 lbs</li></ul>