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Ultrapure natural aragonite of fossil origin as a substrate for all marine water aquaria. Due to its purity, extremely bright with high light reflectance which is particularly an advantage for light-hungry corals. Reef Ground is an outstanding alternative to natural coral sand and protects the environment. Before placing in the aquarium, rinse the substrate thoroughly.
CaCO3 99.2% MgCO3 0.4% FeO3 0.035 %
