I have 48 inch 660 watt setup powered by 3 icecap ballasts on my 120 gal DT
have not had any trouble keeping hard or soft corals. i love the color of the actinics
but when I see other tanks with halides I do wish I had that crisp shimmer they give off
also another point is I change the bulbs out every 10 months and they are getting harder to find not many company's stocking them it seems .