Marco ReefSaver is natural rock that is harvested on land from an ancient reef system buried when the Florida land mass was formed.
Whether you’re building a saltwater aquarium, a reef aquarium or a freshwater aquarium, you (and your fauna) will love this rock. The stone is highly porous and has a fine shape.
MarcoRocks stones are the finest aquarium rocks available on the market.
Entirely natural, the rocks are sourced from a rocky reef that was previously alive.
Natural calcium carbonate rock.
These stones have never been treated with chemicals or additives. They are certified pest-free and harmless.
For information, you can usually spot fossilized ancient corals in the rocks.
The stones are inoculated with bacteria before being sent. However, they need microfauna afterwards, which is why the starter kit is essential when buying stones.