Carefully designed by CaribSea, LifeRock is a great decorative option for any cichlid, marine, reef, or brackish aquarium applications. This Original model of LifeRock includes several pieces in an assortment of sizes, allowing you to customize a structure of your own preference. Crafted to look and feel like real live rock, they offer amazing porosity and provide an incredible biological performance, dropping ammonia like the real thing! LifeRocks are the next best thing to the real thing, at a much more cost effective price point. Sold by the pound.