I'm also having this type of sps growing litterly everywhere in random places in my tank. Pic doesn't show it but it has green polyp extensions and looks fuzzy. I thought it was my green porcilapora spawning at first but then I notice it was a bit if purple when I cleaned my tank today. Seems to be encrusting not acro type and doesnt branch out like porcillopora and all of them are in a pebble shape.
