From the manufacturer

Vitamins and minerals influence the coloration and color intensity of corals by providing essential nutrients for the chemical reactions that take place to form biochromes in living tissues. In addition to the three Coral Intense Supplements, we recommend that you also use Coral Exponential to provide needed amino acids for coral tissue growth. Continue supplementation of major minerals. We recommend Color Basis Calcium Plus (this product), Reef Basis Magnesium and Reef Basis KH for major mineral supplementation simultaneously. Discontinue iodine and trace element supplements because those will be provided by the Coral Intense System. Feed inhabitants normally. The hobbyist should pay close attention to the alkalinity, or KH of the system and monitor calcium, magnesium and strontium levels. Continuum recommends that you maintain a calcium level of between 410 and 450 mg/L (ppm), an alkalinity level of 7.5 to 9 dKH (2.5 to 3.21 meq/L), and a magnesium level of 1275 to 1350 mg/L (ppm).