Starfish coming out?
 

I just hooked up a sump this evening, and all of a sudden all the starfish that I didn't even know existed have rose out of the depths of the rock and are climbing to the top of the rock (not out of the tank)

Are they trying to signal to their starfish god? Or is this a sign of something not right?

They smell food.

Not to worry most LR have a couple different kinds of starfish hitchhiking on it. This is a good thing and normal. You may even see a bristle worm or two.

signalling starfish god for sure.

I know that -_- but when all of them come out at the same time, it would be considered alarming.

I don't want to panic you but I had this happen when I used the wrong silicone on my tank once. All the little stars I had crawled out and many started to kick the bucket - that was my first sign something bad was happening. A few days later half my SPS followed suit. So, keep an eye on things...

Did you build your own sump? What silicone was used?

The sump was pre-made (aqueon 3) - so no silicone was used. The only thing possibly harmful would of been the PVC cement for the plumbing.

PVC cement shouldn't cause issues if it was allowed to cure for long enough. If there are still some organics left from the cement, your skimmer take it out in time.

The fact that they all come out around the same time raises some flags but nothing to panic about. Keep some water handy in case a water change is needed.

Well, they all went back into the rocks. And I do (and always) have two buckets ready for changing over. It was just a little strange that they all came out at once after the sump was kicked on.

like i said, signalling starfish god.