Where did this sps come from???

[TimT]

I was doing some routine maintenance and was cleaning the mounts for the Korallia pumps I use in my SPS system. I noticed something growing on the top of this mount and on closer inspection it is an sps of some type. Here is a pic of it encrusted on the Korallia mount.



I have since fragged it off the mount and glued it to a frag plug. It is starting to encrust and has turned green in the higher light. I plan to grow it out and see what it becomes.

So the question is how did it get there as it was in a place that no coral could touch it?

My suspicion is that either it was a polyp bail out or a spawning. I don't know if SPS bail out polyps like some LPS do. Does anyone know?

I did have this Acro spawn on Dec 23rd 2011




Cheers,
Tim