Flourish Trace supplies a broad range of trace elements demonstrated to be necessary for proper palnt health and growth. Trace elements are normally depleted by utilization, oxidation and precipitation. The latter two processes occur more rapidly than with other micronutrients. This makes it important to restore trace elements on a regular basis. Flourish Trace may be used alone or in conjunction with Flourish. Best results are obtained when both are used. Flourish Trace is nitrate/phosphate free. Guaranteed Analysis (Amounts per 1 g), Boron (B)…… 0.028 mg, Cobalt (Co)…… 0.0003 mg, Copper (Cu)…… 0.032 mg, Manganese (Mn)…… 0.085 mg, Molybdenum (Mo)…… 0.003 mg, Zinc (Zn)…… 0.169 mg, Rubidium (Rb)…… 0.00008 mg, Nickel (Ni)…… 0.00003 mg, Vanadium (V)…… 0.00002 mg