ICP Test for the Following 33 Elements: Aluminum, Arsenic, Barium, Beryllium, Boron, Cadmium, Calcium, Cesium, Chlorine, Chromium, Cobalt, Copper, Iodine, Iron, Lanthanum, Lead, Lithium, Magnesium, Manganese, Molybdenum, Mercury, Nickel, Phosphorus, Potassium, Rubidium, Scandium, Selenium, Silicon, Sodium, Strontium, Sulfur, Vanadium, Zinc Inductive Couple Plasma, or ICP, is an instrument commonly used for testing when complying with the EPA regulations in food and environmental issues. ICP will test your aquarium’s water elements down to the parts per million (ppm), or even parts per billion (ppb), surpassing the accuracy of any hobby level test kits. Salt water is injected into a plasma chamber that is approximately 10,000 degrees Celsius. This extreme temperature breaks everything in the sample apart into the basic elements. Every element is then released at a specific wave length and the machine measures the concentration of the element by how much energy is released at that specific wave length. Research has shown time after time that certain trace elements are necessary for the growth, reproduction and color of many corals. Knowing exactly what is in your tank’s water will help you troubleshoot issues, see what is missing from the water that may be inhibiting coral growth and coloration, or simply help you make educated adjustments to give your corals the best possible environment to thrive.