however, through my own experimentation, and the results of others on this site, i have determined that this is wrong! I always mix my spectrums now, always. the plants end up much more robust and just grow beautiful sticky, stinky awesome tasting buds that will get you stoned like you remember it
in my 4 x 46w setup i use 2 3100k lamps, and 2 4700k lamps. this is what worked out best for me, however, it may not be the best for you, it just takes a little experimentation to figure out what works best....
reflectors are bad, in my opinion, and only should be used with HID lamps. they are heat sinks(trap heat and then radiate it into the grow room), and block more light than they reflect! also, cfl's should almost always be horizontal or as close to horizontal as you can make it. also, if you FIM or top, a cfl can be placed directly INSIDE the plant! this works great for the lower branches...