4 tier Reef Cube

4-tier reef cubes consist of four consecutive sized cubes molded as a unit. The layers create a complex habitat with different nooks and crannies for marine life to live in.

4-tier reef cubes are a more advanced type of artificial reef than 2-tier and 3-tier reef cubes. They are more expensive to construct, but they can provide a more complex and durable habitat for marine life.