I am running 2 400 radiums on my 6x2x2 tank. I would like to add some blue to the tank. I think i need a ballast icecap 660 model, a VHO 72 inch bulb and what else, end caps and wiring? I cant find a reflector this big. What other ballasts could I use?

get a 454 and super actinic that's the bomb combo!!!! I used a work horse 7 ballast on mine... All you need is 2 bulbs and 4 endcaps... And either one or 2 ballast depending on which ballast you use...

