Jun 10, 2014 #1 Steve190 Aquarium Advice Apprentice Joined Jun 27, 2013 Messages 31 Any ideas of what this stuff is its starting to sprout on a couple of rocks
Jun 10, 2014 #2 mr_X Aquarium Advice Addict Joined Apr 27, 2008 Messages 17,895 Location Fairless Hills, Pa. The common name is bryopsis, or hair algae. I don't know the exact species.
Jun 11, 2014 #3 Macscale Aquarium Advice Addict Joined Jan 11, 2014 Messages 2,850 Location Lakewood Ranch, Florida. You can clean it off if you really want to but it isn't a big deal. Some people like the look of it.