Feb 26, 2022 #1 mbmiche Community Member View Badges My Tank Thread Joined Jan 20, 2022 Messages 39 Reaction score 40 Location Hoffman Estates Rating - 0% 0 0 0 I posted in the algae forum, but I realized this might be the better forum for this post. Looking to identify the dark green growth on the end of this rock. Also, wondering if these might interfere with the growth of my GSP. Thanks for any help!
I posted in the algae forum, but I realized this might be the better forum for this post. Looking to identify the dark green growth on the end of this rock. Also, wondering if these might interfere with the growth of my GSP. Thanks for any help!
Feb 26, 2022 #2 bradleym Well-Known Member View Badges My Tank Thread Joined Feb 26, 2011 Messages 964 Reaction score 1,137 Location St. Louis, MO Rating - 0% 0 0 0 Those are hydroids. They will sting/impede coral growth.