Seachem Flourish Trace 500 ml Product Description Flourish Trace supplies a broad range of trace elements demonstrated to be necessary for proper plant 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. Why It's Different By separating the minerals out into a separate product, one can dose it on a more frequent basis than a broad spectrum supplement without worrying about a build up of the more slowly used components. Directions Use 1 capful (5 mL) for every 80 L (20 gallons*) twice a week.