Purple Tech contains specific concentrations of calcium, magnesium, strontium, trace minerals and carbonates designed to stimulate the growth of purple coralline, green calcareous macro-algae and stony corals. When aquarium systems require more than just the basics — Coralife® steps in. From the all-inclusive BioCube® aquariums to cutting-edge lighting, equipment, Water Care, and more. Coralife is designed to simplify the complexities of this mesmerizing hobby.