Aug 4, 2014 #1 A ashafer Aquarium Advice Regular Joined Mar 7, 2014 Messages 91 I recently noticed this black bubble on my zoas it may be black algae but it could also be eggs can some one help me? Sent from my iPhone using Aquarium Advice
I recently noticed this black bubble on my zoas it may be black algae but it could also be eggs can some one help me? Sent from my iPhone using Aquarium Advice
Aug 4, 2014 #2 Sniperhank Giant Clam Addict Joined Nov 18, 2011 Messages 20,651 Location Summerville, Pennsylvania That is bubble algae. You can gently siphon it out, but don't break it.