Weird Stuff In My Aquarium

[Acrowhora]

Those are hydroids,nasty little buggers

Originally Posted by Wheelman76

I have some of that as well , seems to grow on the lower rocks underneath where there is not much light. Unfortunately I have no idea what it is. It does almost seem like some type of hydroids.

Like this type
Attachment 11463

[canadianbudz604]

The pic of the ones near the palys are def hydroids, the other stuff looks different. The way I can describe it is tiny branches covered with grey mud?

[lastlight]

yeah that is a perfect description. Mine don't look like the hydroids in that photo at all.