Hydroids!

[matty0206]

Is there a way to get rid of hydroids? How quick do they spread and how harmfull are they? I have a few and I just want to start now if they spread quickly! Thanks for any help!

[bheron]

you mean the sponge/filter feeder things? are they white little q-tip things?

if so, they will be there as long as you have nutrients to feed them! they are harmless.

[dc]

Depends on what kind they are. Some are pretty fast spreading and not really a good thing.
These kind are fast growing and can overtake your tank. I manually pull them out and kalk them.
http://images5.fotki.com/v58/photos/2/28482/235116/DSC02565Hydroids-vi.jpg

[matty0206]

Yeah the ones in the pic are the ones I have! Thanks for the response mine are bright green are those bad? So you just grab them? Will joes juice work on them?