Metals + Contains a balanced solution of iron with minor and trace elements that promote enhanced green colouration in coral. Metals + also contains zinc that is an essential cofactor for many enzyme systems in your reef aquarium and boosts zooxanthellae populations in coral. Metals + is designed to replenish depleted elements used by coral, fish and other organisms in your reef aquarium. For more information on individual elements, see our elements range on our website. Parameters: Iron levels should be maintained between 0.04-0.4 ppm Dosing: 1ml of metals + in 100L of water raises the iron level by 0.10 ppm This product can be manually dosed or with a dosing pump. Basic dosing instructions: Lightly stocked aquarium -0.5ml/100L daily Medium stocked aquarium – 0.75ml/100L daily Heavily stocked aquarium – 1.0ml/100L daily INGREDIENTS: Iron, Manganese, Nickel, Zinc, Cobalt, Copper, Chromium, Copper CAUTION Keep out of reach of children and pets. Not for human consumption. For marine aquarium use only.