Marine Trace supplies a broad range of trace elements demonstrated* to be necessary for proper fish health and growth. Unlike terrestrial animals, fish obtain nutrients from both their food and environment. Trace elements are normally depleted by utilization, oxidation and precipitation, thus it is important to restore them on a regular basis. Marine Trace contains only those elements actually demonstrated* to be required by fish. Guaranteed Analysis (Amounts per 1 g) Calcium (min)ииииииииииииии 2.40%, Calcium (max)ииииииииииииии 2.64 %, Magnesium (min)иииииииииииии 0.792 %, Iodine (min)иииииииииииииии 0.1 %, Potassium (min)ииииииииииииии 0.1 %, Copper (min)иииииииииииииии 0.032 mg, Fluorine (max)ииииииииииииии 0.001 mg, Iron (min)ииииииииииииииии 0.007 mg, Manganese (min)иииииииииииии 0.002 mg, Selenium (min)ииииииииииииии 0.000006 mg, Zinc (min)