ok we need help here, not sure what the difference in the lights are so I guess you could say we are kinda new to the hobby of lighting, so here is my question: we are trying to build lights for our 135 gal tank so we looked at 4 VHO 160 watt bulbs with 4-65 watt actinics bulbs is this going to be ebough or are we wasting our time with this lighting setup? any ideas or thoughts would be greatly appreciated.