Hello, I'm new to the marine aquarium scene and I recently set up my first marine tank 15g (More work I know lol) the tank have been up and running for about 2 months now and I just notice a few things I wasn't sure about. Can anyone tell me what the items are in the pictures. The first picture looks like a worm but not sure and I have like 15 of them living in the same piece of live rock. The second picture almost looks like a plant but the red parts on top go in a out of the small white base.
usually i you put a peppermint shrimp in the tank the aptasia will be gone forever. unless you add more rock with aptasia on it

