ill post a pic tonight of my brothers tank
130 od litre with 150W of mh no flouro
very bright no problems with the corals i have in there at the mo
as per chimera's comment, if you want overkill check out nano-reef.com,
these guys are nuts i.e guy with 12watts per gallon
guy with rbta in a 3g
and allot of them have mh on their tanks