Concentrated Boron Solution for Improved Coralline Growth & Red Coloration in Zooxanthellate Overview Provides boron, a component of alkalinity that is also associated with improving color intensity of coral tissue through incorporation into red phytopigments. Encourages biogenous aragonite formation (increased growth rates of coralline algae, as well as skeletal growth in corals and other reef-building invertebrates). Considerably stronger than competing boron supplements. Utilizes ACS-Reagent grade active ingredients. Formulated by a marine scientist.