I got this piece of rock covered in hair algae from a LFS, who acquired it from another customer that was tearing down his tank. Once I got it cleaned up and under lights this guy came back and is spreading pretty fast. Any ideas what it is?
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
That was my first guess. Thanks for the reassurance!I'm no expert but kind of looks like a war coral (favites). Looks great!