I am wanting to use 2 of these on my mixed reef but am having difficulty finding actual PUR on these lights. Most people measure the par on kessil with an apogee par meter but they are not sensitive to the blue range and do not detect light under 409nm, therefore par readings using these sensors on kessil lights are almost useless. Does anyone know of the PUR on these lights or have used them on a standard 75g mixed reef? The 360's are not an option and I am not looking at other lights.