We added "the monster" last week. It's a XXL long tentacle anemone. Our tomato clown has chosen to take host, but for some reason it's only during certain parts of the day. We may take it out and start a new tank for our two false perculas to attempt to host.
The anemone is bloody massive! It took two hands around the bag to take it home from the LFS. It's about 20x20" - we're still looking for a good spot for it where it could stretch out, because that's only about 50% of it. It decided to stay in the corner.