Extremely pure natural aragonite of fossil origin as a base material for all marine aquariums. Thanks to its purity, it has a high brightness with a high ability to reflect light, which is a special advantage for corals that need a lot of light. Reef Ground is considered an excellent alternative to natural coral sands and protects the environment. Before placing it in the aquarium, the base material should be rinsed well.

CaCO3 99.2%
MgCO3 0.4%
FeO3 0.035%