I used fluorescent tubes for many years, used the typical 'cool-white', too, not knowing any better ... the plants still grew OK, but, again, the warm, red spectrum is best, for flowering ... GE calls their warm, red spectrum tubes , the 'Kitchen & Bath' version ... as far as fluorescent lighting goes, I much prefer the tubes, over the CFL bulbs ... I always used the plain T10, or T12, the added lumens of the more expensive T5, just didn't compare for me, 'dollar-per-lumens' ... been a long time since I compared lumens/prices, the situation may have changed by now ... :smokin: