Aquaforest Components Strong ABCK is a concentrated four-part additive system formulated to deliver essential trace and microelements for optimal coral health and coloration in reef aquariums. The set includes Components A, B, C, and K, each targeting specific biological and structural needs. Component A replenishes strontium and barium to strengthen coral skeletons and enhance calcium absorption. Component B provides balanced heavy metals necessary for metabolic and pigmentation processes. Component C delivers iodide and fluoride to support vivid coloration and skeletal resilience, while Component K supplies potassium to enhance metabolic efficiency and the natural hues of SPS corals and clams. Together, these supplements maintain stable microelement levels when used with Aquaforest’s Calcium, Magnesium, KH Buffer, and Reef Mineral Salt, supporting steady coral growth and a thriving marine ecosystem.