I have 14 polyps that came on a Florida ric frag..Not sure if they are Caribbean or not. They were under 14k MH when I bought them and just arrived that day. They have gone from a darker blue to a grey color under my lighting and I'm not sure where they should be placed. I have them 3"under the surface my 420 watts vho and in pretty high current as reccomend by someone here on another thread. I have 2 atinic whites and 1 blue. Do I need to change the bulb configuration to get the colors?