Alternanthera reineckii is the most common form of alternanthera available. It will reach roughly 10 inches, but will grow emerged if it is allowed to. To propagate simply cut the top of the plant and replant. The older leaves will get algae more commonly, so it is a great plant to test the cleanliness and balance of your planted tank. Extra iron dosing based on your location is almost always necessary to maintain a healthy plant and growth. Fertilization is recommended for this plant.