Theres no point and moving it, it moves all over the tank constantly, it does what it likes...aside from the color i'm not too worried about it
As mentioned, an anemone that roams the tank is not generally "happy"..as it is actively searching for better conditions than where it is at. This could be lighting, different current, etc. Any chance you could post a pic of how the whole tank looks? I would like to see just how high the rockwork is in the tank. You do not have 4 watts per gallon, but I would think if the rock is high enough...the compact shape of the Powerquad should deliver sufficient lighting if the anemone is up there. This would help eliminate possiblities one by one.