ELOS Ca-Pur is a pure form of Calcium Carbonate specifically selected to be used in all marine aquarium. No unwanted purities or organic trash normally found in most CR media available. Nitrate and Phosphate free. Many lower quality Aragonite based calcium carbonate blends contains unwanted NO3 and PO4 or none carbonate fillers. Derived from Aragonite, its internal crystalline structure has an orthorhombic symmetry, whereas those of Calcite tend to often rhombohedral and differs from Calcite due to its high pureness. Medium grain size (approximately .25”) of pure Calcium Carbonate ideal for most calcium reactor models.

ELOS Ca-Pur provides bio-available calcium for lush growth of the aquarium biomass. Corals will open more and stay attached to their skeletons better,
with regular use.