hydroids or feather duster ? please help !!!!

[asylumdown]

oh yah, those look like the same kind of tiny clear hydroids that show up on your glass sometimes.

I've never heard of those becoming a problem, and the ones that show up on glass usually wax and wane according to some set of conditions that nobody really understands.

Though I could still be wrong. They could be baby aiptasia (and that would be a real bummer), but I doubt it.

Anyway, save someone else jumping in and saying I'm out to lunch I personally wouldn't be too worried about those guys. It's the brown colonial digitate hydroids that are a real nuisance.