Marco Premium Shelf Rock lends itself to that perfect shelf scape that is reminiscent of a multi-tiered reef scene. We recommend stacking the rocks as perfectly horizontal as possible and cementing them together at key junctions with our E-Marco-400 mortar. Grey is perfect for new scapes, pink for established reefs. For best results place these rocks over our ReefSaver Foundation Rocks.

All natural calcium carbonate rock. Never any chemicals, additives. Often, you can spot fossilized ancient corals in the rocks. It comes to you pest and organic free.

Eco-Friendly Sustainable Rock

Our rock is a "green" sustainable product, because it is not harvested from a marine environment it has no negative impact on our delicate reef or marine ecosystem. Combine this with our unique no chemicals cleaning and processing and you get great looking rock, totally pest and organic free that's also environmentally friendly.

No Chemical Cleaning and Processing

Combine this with our unique no chemicals cleaning and processing and you get great looking rock, totally pest and organic free that's also environmentally friendly.

The Choice Of Professional Reef Builders

Whether you are building a Saltwater fish only, a Reef tank or a Fresh water tank, and even reptile environments, you will love this rock and so will your pets. It is highly porous and beautifully shaped. Marco Reefsaver Premium Shelf rock is a natural rock that is harvested on land from an ancient reef system buried when the Florida land mass was formed.