[houseofcards]

Who knows for sure how big Echinodorus Tenellus gets. I purchased some here and I have leaves that are 7" long. I'm thinking it might be Echinodorus Angustifolis instead. Mods feel free to move this to Plant ID if necessary.

Plant in Question:

 

[Cavan Allen]

It's hard to tell from the photo, but E. tenellus (or H. tenellum) can indeed get that tall under certain conditions, especially if it's crowded.

 

[houseofcards]

Thanks Cavan, that's helpful. I didn't realize E. Tenellus could get that tall.

 

[Tex Gal]

WOW! That's huge!! Most of mine stays really short. I do have some now that are maybe 2" at most. Aren't plants amazing!