Reef Ground Sand 1.0 - 2.0 mm dia., 3 L
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Very pure natural aragonite of fossil origin as a substrate for all marine aquariums. Thanks to its purity, it has high brightness with high light reflection, which is a special advantage for corals that need light. "Reef Ground" is an excellent alternative to natural coral sands and is environmentally friendly. Before placing it in the aquarium, the substrate should be washed thoroughly.
CaCO3 99.2%
MgCO3 0.4%
FeO3 0.035%