I need an identification. I noticed during pruning my 10gal danio tank
that I seem to have some sort of plant parasite on my green hygro. The
older leaves have a dark green substance growing on them. The growth is
not a slime; it forms strands about the size of fishing line (pretty
coarse). It seems to be consuming the older leaves. I think it looks
sort of like a version of Spanish moss (I bet Paul K. at Tugaloo knows
What is this stuff? I've had the filament algae, green spot algae, and
blue-green algae, and it's not any of these.