severums and plants

Hi all.

I have been kinda lurking around here for a little while.
Have found lots of good info.  I have just recently started
growing plants in my angelfish tank.
Now I am considering growing plants in my severum tank.
Does anybody know if they will eat plants? I have looked
in a couple books, but could not really find anything. And
of course the guy at the pet store would say no.
Thanks for any info.