Add 5 ml (1 tsp) per 50 gallons of tank capacity every week or 8 drops each day.
Kent Marine Iron & Manganese Plant Supplement
Size: 8.7 oz.
Non plant food ingredients: de-ionized water 96.5%. Derived from: muriate of potash, iron EDTA, manganese EDTA, zinc EDTA, sodium molybdale, cobalt chloride.