EasyLife Ferro plant fertiliser provides iron for aquatic plants, which can be easily absorbed. Iron is important for good leaf development and ensures the "green colour" of the plant through the production of chlorophyll. A lack of iron can lead to "yellowing" of the leaves. This phenomenon is called chlorosis and can be easily remedied with EasyLife Ferro plant fertiliser. Iron deficiency occurs particularly with many plants in the aquarium that grow quickly. It is advisable to add EasyLife Ferro to prevent problems.