These are the SAME lights I have been using for a while. I am hoping it is just the cycling. When the lights are off, it looks much greener in color. I have three, and they are all attached well to their rocks, their color is off and they don't seem to be quite as big. I am fairly certain it is not lighting. Haven't done a water test today yet, but I know the tank is still e-cycling after my disaster (very long story). Unfortunately, I don't have access to a more stable tank for now, so moving them is not an option.