Plants need iron to produce chlorophyll, a pigment in plants that gives them their green or red color and that absorbs the light necessary for photosynthesis. Iron is already included in Giovanni’s Trace+ but additional supplement will be needed in case the tank contains a more than average number of plants. In addition, this product is excellent for new aquariums as it will enhance the colonization of beneficial bacteria in the filter. Iron+ contains chelated iron that is stable at a pH range of 4 to 8. The recommended level of iron in planted aquaria should be between 0.5 and 1 mg/l. The main advantages of Giovanni’s Iron+ are as follows: # Contains chelated iron which is extremely soluble in water and has been stabilized to avoid oxidation. # Prevents cholorosis, a yellowing or whitening of plant leaves and stems. # Enhances the green and red coloration of the aquatic plants. # Stimulates the development of new stems. # Excellent for new aquariums as it will enhance the colonization of beneficial bacteria in the filter. # Ideal product for heavily planted aquaria This product is available only in 125 ml bottles with an integrated measuring area. The recommended quantities are 1 ml per day for every 100 liters (approx. 25 gallons) of water or 1 ml per week for every 10 liters (approx. 2.5 gallons) of water, but these are directional values only. Actual dosing will depend on many factors, like the types and the number of plants. For best results, we advise using the product in combination with Giovanni’s Plant Nutrition Fertil+ and Trace+. Ingredients: Contains chelated iron that is stable at a pH range of 4 to 8.