[Ducaroo]

I have a 70gal tank and cycling LR for 3 weeks on one rock. First photo is some kind of anemone? about the size of a half dollar, pink base, likes low light, flattens w/ bright lights and tentacles become inflated. The second photo is some growth about 1/4 inch wide on side of same LR. Third photo is from bottom of LR. It looks like a yellow ball with spikes on it, and attached to the side is a white tubular thing with maybe an opening on the large end of the opening(not sure). Any help would be appreciated. Do any of these have to be ejected?