I do not appreciate warm white fluorescents (6500K)<span style='color:red'>[Edit: correction, should read 3000K -> 6500K = daylight]</span>. Sure they are good for blooming, but for my money they are just not good enough at providing energy for outstanding vegetative growth like I find with cool white fluorescents (4100K). If I were ever to try one it would be in combination with 2 or 3 cool white.