Dudes,

That is not called Lotus Shimada. It is called Nuphar Shimadai. It will grow 2 types of leaves at the same time. The pic shown is submersed leaves. And there is another type just look like Lotus which floating on the surface of water. Recommended to have a big tank to house it.

And there is no A.longiplomus. Should be Aponogeton boiviananus. Mine A.boi was grown to 3.5ft long before. Recommended to have a big tank to house it also.