Thanks Mike. No I haven't moved anything in the tank. The anemone has moved down alittle from where it was at, but not much. I have heard that metal halides bulbs, including the XM bulb, can take awhile to get burned in and reach their true color. I have had the XM on the tank for awhile now after originally having an Iwasaki. Would it be possible that even though it has been several weeks if not a couple of months that the tank is finally responding to the new light?