What is this?

[AkainePSP]

This past Tuesday we got a combonation of blue and red hermits for our 75 gallon tank . This afternoon I noticed some little white things on the glass. Any ideas. Pic attached.

 

[zenn]

looks like something is spawning. What else do you have in the tank? I've seen video of coral spawning and that's pretty much what it looks like but i doubt that's it.

 

[haus]

I am not sure, but that I believe that little starfish towards the left of the pic can become a nuciance. Somebody chime in if I am wrong.

 

[cmor1701d]

I've had one of those star's in my tank for almost a year now. Never ogt much bigger and disappears for weeks into the rock. Never bothers anything that I can tell.

 

[Fluff]

I can't tell what that is on your glass. How old is your tank? It look like silt or something. Does it brush off?
The starfish isn't a problem. It looks like a Asterina and they are pretty much just algae and detrius consumers.