ID Please!

[907_Reefer]

Noticed a few of these on my glass today, not sure what they are..?

I took a side shot, went to clean the glass for a better shot and he disappeared.. Have a few but that was the biggest one, maybe just over 1 mm..

Thanks!

 

[Alexraptor]

Looks like a hydroid, generally harmless and tend to crop up in young tanks iirc.

 

[907_Reefer]

Thanks, as long as they're not a threat I'm good . Tank is a just month old.