to the last to replies, this is not aiptasia I'm like 95% sure. I have maybe 13 aiptasia over 20 lbs of live rock, and only on 3 of them, (this one included) but it is totally different from the aiptasia. There's two of these little guys, and they are not attracted to light from what I can tell, as they shrink into the rock in the day time when in running the lights. Those pictures last night look like crap because I used a flash in a dark room on an I5c with no light on the tank but my flash. Babysit grandmas babysitting tonight so I'll be able to turn the light on for better pics here soon