Reef Ground Sand 2.0 - 3.0 mm dia., 20 KG
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Extremely pure natural aragonite of fossil origin as a substrate for all marine aquariums. Due to its purity, it has high brightness with high light reflection, which is a special feature for corals that require light. Reef Ground is an excellent alternative to natural coral sands and protects the environment. Before placing it in the aquarium, rinse the substrate well.
CaCO3 99.2%
MgCO3 0.4%
FeO3 0.035%