I have a 29 gal biocube with a reef setup. Everything in my tank has done very well and is growing quickly. Recently I came across a cool tunicates that I put in my tank. This tunicate came with some hitch hikers. A 4 inch worm ( bristle worm I think but no bristles) and a tiny bright blue flat worm. Looking for suggestions on either removing them or leaving them be. Any advise would be greatly appreciated.