Dry Rocks coming directly from saltwater fish tanks that have been running for many years.  Great Rocks that are easy to stack when creating a base for growing live coral or as an addition to existing coral-based ecosystems. This porous characteristic provides a natural biological filter as well as a perfect environment for denitrifying marine bacteria to grow and flourish, which effectively reduces nitrates in your tank.

Please take note 

• Your rock order may be different size and shape than in the pictures shown
• Rocks are picked Randomly (we try to pick from different sizes)
• PICTURE IN THIS LISTING SHOWS EXAMPLE (Not what you will receive) - This is only an example picture to show you the type of rocks you will be receiving, and as you can see they are full of porous characteristic provides a natural biological filter as well as a perfect environment for denitrifying marine bacteria to grow and flourish 
• Due to the fragile nature of this rock, it is possible for the rock to break during shipment. We do our best to package the rock sufficiently to minimize damages. As Shipping company does not consider this item insurable, we are unable to replace or refund damaged pieces. It is possible to attach multiple pieces together using aquarium epoxy in order to make large shelves or repair damaged rock.