Meant to be used in place of Coral8 Yin, Coral8 DC supplies Ca, Mg, and Sr in ratios favored by many reef aquarium enthusiasts (e.g. 100.0 : 0.50 : 0.10 Ca : Mg : Sr).  Pair with Coral8 Yang, which increases alkalinity, and the system pH to a maximum value of ~8.40. A simplified approach to encouraging aragonite formation in closed circulation marine ecosystems.  Mixed as directed on packaging, solution attains values of 160,000 mg/L Ca, 8,000 mg/L Mg, and 160 mg/L Sr.