Cladophora green thread algae treatment

Could somebody describe how to identify Cladophora from the other
green filamentous algaes? What I have is green, grows in branching
filaments and forms clumps like cotton around plant stems esp
small ones like Lilaeopsis. It seems to attach to Lilaeopsis
and other leaves too so it's hard to be sure you've got it all
by mechanical means.

Do you think that treating some delicate plants in a copper
solution in a separate tank might be an effective treatment for
Cladophora? I plan to do the bleach treatment for my 50 gallon
tank this weekend and set it up with an experimental substrate
but I'm concerned that many of the delicate plants can't survive
a 4 minute bleach for Cladophora (if it's what I have).

Perhaps it might be better to take a small piece of these
fast growing plants like Elodea, that seems to be algae free
and grow it separately for a while to be sure and then
introduce it later. If all visible Cladophora is gone,
can we be sure it's not present on the growing tips of
Elodea or other fast growers?