Yup thats what im was thinking aswell. The t'5s are bright and all but im going to get a 175w metal halide to supplement, with that id have no problems with soft coral. I dont know what speices the cowrie is but here is a pic, and btw
i found the star polyp, he fell between 2 bigger rocks so i replace him in the tank and now he is opened. So it was the placement then.