melting crypts

I recently added a fermentation type CO2 system to my 25 gallon planted tank
which also has grow lights on it. At the same time I started supplementing
with iron. Most of my plants are growing like crazy with the new
conditions, but some of my crypts are melting. A friend mentioned that they
will likely adjust to the changes, and then send up new more adapted leaves
from their roots. Does this sound true?

thanks!

-O