Seachem Flourish Iron is a highly concentrated (10,000 mg/L) ferrous iron (Fe+2) gluconate supplement. It should be used in those cases where the iron requirements exceed that which can be delivered by Seachem Flourish at the recommended dose or signs of iron deficiency appear (such as short and slender stems or yellowing between veins.) Contains no phosphate or nitrate.

• For plants with high iron requirements or plants with iron deficiency
• Use 1 capful (5 ml) for each 50 gallons or as required to maintain about 0.10 mg/L iron. For smaller doses please note that each cap thread is about 1 ml. Use the Seachem MultiTest Iron Test Kit to monitor iron concentrations.This 500 ml size treats 100 gallons for 4-6 months.