Thanx a bunch ORECAL. I've been tryin' to figure out the best lighting situation for flowering. I've currently got two 42 watt CFLs-2700K, dual 4' fluoresent fixture with a 3500K bulb & a 3000K bulb(80 watts total), & 3 18" fluoresent tubes-one is 6500K, one is 5000K, & the other is 4200K. I think maybe having as many spectrums of light at all times is best for the plant from what I've read -balance it seems is the key. ( I have about 14,000 lumens)I know I need more but space is limited.