May 21, 2012 #1 Clownfish25 Aquarium Advice Activist Joined Feb 18, 2012 Messages 184 Have white tube looking things growing on my rocks, what are they? Good or bad? Attachments image-2613557674.jpg 138.7 KB · Views: 45
May 21, 2012 #2 mr_X Aquarium Advice Addict Joined Apr 27, 2008 Messages 17,895 Location Fairless Hills, Pa. Q-tip sponges. They are fine.