good comparason info on bulbs

[stephane]

delphinus

I dont want to discourage you of buying it because from what I have read it is a good bulb
but I only aware people from tinking that they are as bright as an Iwasaki 250 or 400

as far as what coral need what intensity its your to decide do we need the intensity of those monster?
I dont know for shure since some grow coral even under fluo and I do it in the past but if we dont need intensity why just bug buying 180$ MH bulb when you could do it whith VHO or PC smaller tank ?