Dec 15, 2011 #1 Fish-guy Aquarium Advice Freak Joined Oct 15, 2011 Messages 270 Location Canada I've got lots of these little star like things on my glass. I think they are called Hydroids. Are they harmful? Attachments image-3567466023.jpg 61.5 KB · Views: 210
I've got lots of these little star like things on my glass. I think they are called Hydroids. Are they harmful?
Dec 15, 2011 #2 spoonman Aquarium Advice Addict Joined Jul 28, 2008 Messages 3,720 Location Las Vegas, NV Here is a good link to a HitchHiker FAQ.
Dec 15, 2011 #3 Cantareadio Aquarium Advice Activist Joined Nov 6, 2011 Messages 172 Pretty snowflake