Oct 22, 2013 #1 4127john Aquarium Advice Freak Joined Aug 8, 2012 Messages 246 Location New jersey I'm not sure what this is Attachments image-3759646721.jpg 147.7 KB · Views: 127
Oct 24, 2013 #2 Craigj247 Aquarium Advice FINatic Joined Feb 19, 2012 Messages 779 Location Sri Lanka Hmmm... Looks to me like hydroids...
Oct 24, 2013 #3 Bendyboyben Aquarium Advice Apprentice Joined Oct 20, 2013 Messages 37 Maybe the start of coralline algae
Oct 24, 2013 #4 OP OP 4127john Aquarium Advice Freak Joined Aug 8, 2012 Messages 246 Location New jersey The tank is about a year old. I already have it growing on my rock
Oct 25, 2013 #5 Bendyboyben Aquarium Advice Apprentice Joined Oct 20, 2013 Messages 37 On your glass?
Oct 25, 2013 #6 OP OP 4127john Aquarium Advice Freak Joined Aug 8, 2012 Messages 246 Location New jersey Yup it I all on the glass