thats good if it produces more lumens.... you want PAR anyway.. i would take a VHO lit tank anyday over the same wattage of PC's, and im sure there are plenty more people that would agree with that.. VHO also gives off a better color, and bulbs last longer.. VHO is definately better that PC IMO.. go with T5's if your choosing any of them besides MH.. have you seen some of the T5HO SPS tanks?? they are awesome, great growth and color, less heat, long lasting bulbs..