indentify

So I ordered a clean up crew the other day from reef cleaners, and received the package a couple days ago now. Tonight when i got home from work I noticed something on the rocks, that I have never seen before. I am wondering if it has something to do with the CUC i ordered.The small circles on...

This thing showed up about a week ago not sure what it is. What is it? Is it good or bad? Advantages or Disadvantages? If needed how to get rid of it? Thanks for the help you guys are awesome

Had some some stuff growing on my LR and Zoa's, I had some free time so I thought I would post a few pictures and ask. 1st photo - just really blunt green sprouts that are popping up everywhere. I have looked through a few photos and can't find anything exactly like them. 2nd photo - I have...

Can someone identify this organism? It is about 1/4" long (sorry, the photo makes it look bigger, but it's small). I circled it. It has a half shell on top and snail-like head an antennae that come out. It seems to be some kind of gastropod. I don't know if it is bad for my. My tank cycled about...

OK, here's my stupid question for today. We had a Magnificient Foxface in out tank, but a few days ago I noticed he was "missing" We've looked all over the tank, and there's no sign of him. If his tankmates killed him, or if he died on his own, wouldn't there be some remains? Maybe not...

Hey does anyone have any ideas what this is. I bought some chaeto online and was just looking at it and noticed this little guy. At first I was thinking it was some kind of coral so I superglued it to a piece of rock and pu it in my main tank and then it opened up, now I am thinking that it is...