A little hitch hiker in my tank.

Well had a small hitch hiker in my tank. Looks like aiptasia to me and I also posted on reef central and after one confirmation I decided to kill it. I picked it off of the rock, dug out the area where it was located and put vinegar on the area and let that sit for about 5 minutes to hopefully make sure that it will not come back. Then a quick rinse under some fresh cold RO water a little shake and back into the tank. Though I made sure to turn the rock so that I can make sure to be able to see the area that had the growth just in case it does come back.