Extremely pure natural aragonite of fossil origin as an educational substrate for all saltwater aquariums. It features intense brightness with high light reflection due to its purity, which is a special advantage for coral reefs that require abundant light. "Reef Ground" is an excellent alternative to natural coral sands and is environmentally friendly. Before introducing it to the aquarium, the substrate should be washed thoroughly.

CaCO 3 99.2%
MgCO 3 0.4%
FeO 3 0.035%