Seachem Fertilizers Pond Flourish

Iron supplement for pond plants. Highly concentrated (10,000 mg / L). Ferrous gluconate. Ferrous gluconate is better suited to foliar feeding than iron-EDTA. Pond Flourish Iron is a highly concentrated ferrous gluconate supplement (10,000 mg / L). Pond Flourish Iron is more advantageous for plants because the iron it contains is in an immediately assimilable form that does not require energy to transform it. Ferrous gluconate is better suited to foliar feeding than iron-EDTA, due to the relatively weaker iron-gluconate bond compared to iron-EDTA. In addition, ferrous gluconate has the added advantage of being a source carbon. 500 ml treats 40000 l.