It just popped up the other day, the tank is finishing it's cycle.
I just want to make sure it's an ok thing & not something I have to get rid of. It's just on my tongo branches.
Oh yeah. I find things in the rocks almost two years down the road that I have never seen before. Get a magnifying glass, you will be amazed. Of course if you are not already, a magnifying glass immediately turns you into a reef nerd!