hi all,

gosh. I didn't know where to ask this one..

I was staring at my tank (again)... and saw what I think are hydras... (if
I remember my high school biology book correctly). they look like short
white lint with fingers sticking out one end, while the other end is
anchored on glass, gravel, plants. there seems to be a whole bunch of them.
I haven't looked more carefully, but they seem to be more near the bottom of
the tank.

is this bad?

if bad, what do I do?

linda