Fauna Marin Balling Trace 2 Metabolic 250 mlAchieve a Metallic Metabolic Color Effect with Trace 2 Balling Light Solution Adding Trace 2 Metallic Metabolic Color Effect solution to the Fauna Marin Balling Salt Mixes (sold separately) creates a complete primary care system for a reef aquarium and effectively prevents the dreaded Old Tank Syndrome." Refer to Fauna Marin Balling Light Set (sold separately) label for mixing instructions. Ingredients: Iron, Manganese, Copper, Nickel, Zinc, Chromium.