<p>Premium Activated Carbon eliminates discoloration, odors, and impurities...and keeps on doing it long after other carbons quit. Heat-activated bituminous coal-based BLACK DIAMOND granules are specially sized and far more efficient than inferior coconut, wood or peat-based carbons. And now, new and improved Black Diamond works twice as fast. </p><ul><li>24 PER CASE .438 POUNDS</li></ul>