i think i found a solutiong for my heat problem. am planning on using a mix of HPS and fluoros. using just CFLs 6500k for clones, and seedlings, in the 2ftx2ftx2ft top half of the room. and using CFLs 2700k with either a 100W or 150W Hps in the 5ftx2ftx2ft second half of the grow room. what would be better though? the 100 or the 150 HPs and second of all do they need a ballast or can they just be plugged in directly?