Your tank is looking good for being newly set up, how long has it been running? I would question the gsp, the base is supposed to be a nice purple color. there is a thread on the reef forum that shows the color it should be, the thread is entitled hitchhikers id. You should check it out and compare. How long have you had the gsp, and what kind of lights do you have and what kind was it under before you bought it? Also gsp likes a little more flow than most corals, except obviously sps. You should have it in an area of higher flow. Other than that, looks good. Keep us informed...