Haven't seen any runners. There's a few single strands that appear to grow from nothing. The photos I've seen of Caulerpa make it look like its a bit rubbery, is it? This stuff I have is very feathery

:fadein: Just read on Wikipedia that Lettuce nudis arent actually nudis, not even related. They're Lettuce sea slugs (Elysia crispata)

Hmm so spot treatment with Tech M? Could give that a try

yes, the stems and runners are "rubbery" if its caulerpa