I planted a bunch of Egeria densa several weeks ago - it has grown
tremendously with long branched stems and many roots hanging off of
it. Today I trimmed it back significantly. I'd like to have a nice
large group (like in these pictures: http://www.aquabotanic.com/).
Can I take the long sections I trimmed off today - snip off the roots
that are growing out of them - and plant them into the gravel?

TIA,