Seachem Flourish Iron is an excellent and, we believe, absolutely necessary plant supplement especially if you are growing red plants.  It works great with other all-in-one fertilizers and can be used with Seachem Flourish and Seachem Flourish tabs. It is a complexed ferrous (fe+2) iron product which contains 10,000 mg/l of iron and is ideal for iron maintenance in the natural planted aquarium. The type of iron provided by Seachem Flourish Iron is easily and readily absorbed and utlized by the plants.