Echinodorus bleheri

I bought several Amazon swords "Echinodorus bleheri".
I put two of them in my 46G. One of them is now about 23" tall and some if it's leaves are 4" wide. I've had many before but don't recall the leaves getting that wide. Now I'm dosing ferts using EI method. Is it normal for the leaves to get that wide?

Heres a couple of pictures that were taken back in late March or early April. Look at the 9th & 10th pictures:
http://s215.photobucket.com/albums/cc2/cbwmn/

Thanks
Charles
:cheer2: