Alternanthera reineckii mini is a common form of alternanthera available. It will reach roughly 6 inches, but will grow emerged if it is allowed to in a shallow tank. 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.