Hey Paul, that was a very informative article you posted, and good information in general. was not sure it was what they said it was because most of the luteas I found online had totally green leaves... this one has brown-reddish edges... but I see in the article you posted that there are some with totally brown-reddish leaves, so I guess that is not hard evidence for or against it being a Lutea.
I am not sure if the leaves are emeresed growth. They had it submersed at the store, and I had seen it there for at least a month before buying it... so I would think they are submersed growth.
I got the akadama soil from a friend, I do not think it is ADA aquasoil.