Marco

MR Foundation Rock- each piece is approximately 2.5 - 3.5lb. (Formally known as Key Largo Single Sided Prime Cut rock) Welcome to the dawn of stable, architecturally sound aquascaping. Natural top and a smooth cut bottom making it the perfect choice for smart aquascaping. We recommend placing this rock under any rockwork at the boundary layer between the glass and rock display. Separating them by 4-8" allows the rock work to "float" above this bottom layer, promoting healthy flow around the rockwork and over the substrate. Foundation rock can be siliconed to the glass if desired. Rock sizing is not guaranteed but typically 6-10" in diameter.

Our MarcoRocks is the finest all natural aquarium rock available to the aquarium enthusiast today. It is a once live natural reef rock. 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. 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 is a natural rock that is harvested on land from an ancient reef system buried when the Florida land mass was formed.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.MarcoRocks is the choice of many public aquariums, aquaculture facilities and custom tank builders all over the world. Make us your first choice as well you will not be disappointed. 

Stacking rock. Flat on both sides.