I could agree that in this case the difference is not much too noticeable.
Usually you will see much difference on more sizeable rooted plants, esp more demanding plants which do not grow as much or remain small when no additional nutrition given to the roots.
However I do invite in any other users to share their experiences and pics. Whether in the same thread or individual thread. Scientific or just growth journal. Good things or mishaps. All are welcome.
I'll share mine, though it may not be ideal or fair because I'm the source of the tablet.
Echinodorus rubin narrow (taken from the journal sunken garden)
At several days (08/19/07)
Group of assorted plants
Just several weeks passing
The group after several months
Group of crypts and the whole tank (taken from the journal 260g tank)
(note that everything is grown using plain gravel, root+ as the only form of additional substrate nutrition)
Several days after initial setup
Much later over several months
*ps : terribly sorry for a bit hijacking your thread with my pics