Dec 1, 2014 #1 Plecolover18 Aquarium Advice Freak Joined Jul 14, 2013 Messages 287 Location Hershey,PA I was told they are spirulina spots
Jan 1, 2015 #2 HUKIT Aquarium Advice Addict Joined Dec 15, 2009 Messages 6,932 Location 42.2411°N/88.3161°W A parasitic infection.