Holy Hydroids!

[Matt Rogers]

I got those snowflakes all over my glass again.

They seem to come and go, corals are completely unphased.

I don't have any fish, but I'd like to get some someday, are hydroids bad for fish?

It's unclear to me why people consider them bad other than their numbers.

[Gresham]

Some hydroids can consume small (baby/fry) fish so they also can feed on your pods and such. They also can sting corals leading to possiable death of that coral. Describe your particular ones, maybe I have a solution for you.

[Matt Rogers]

Hmm.. they look like little transparent starfish almost.
They look like most pics I have seen of hydroids.
Hard to describe.

[karlas]

ive seen pics of the ones you are talking about matt that kind are supposed to come and go not sure if there as harmful as some of the other i seem to get patches of this type of hydroid i grab them with a pair of forceps and pull them out they usually are in the same spots when they come back check out this hydroid link it leads to many others

hydroid links