Yeah some of it does look like exposure, but I have seen some coloration differences in my tank as well the these maxspect units. I would say that this would be the only negative someone might be able to find about these lights. I have had mine going on a year now. The power cost is low, there is no heat, no bulb replacement so far, easily removable to clean, can adjust in any direction, but they are powerful as all get out, esp those brightest whites. As I understand it your has the 4 15w lights, my older version has the 30w lights. I can only run my brightest whites 30 min a day. When I get coral from other tanks it take a while for them to acclimate to this lighting and they do seem to either darken up or pale out, but never completely bleach. The growth is still amazing and even the new growth under the lighting is a different color which has a cool affect. To me it's a very small trade off for all the positives and it's not a bad thing, just different. Again, it's only some of the lower light corals that are having issue, and this can be helped wiht careful placement considerations, I've just chosen to let them adapt than to move. Overall I would still give this light a 5/5.