flowering light 1 or both???

Sorry for this lame question but i cant get it out of my head , Just want to know if I have to use 1 2700k cfl or both the 6400k and the 2700k for flowering. Thank you guys...

p.s. its an auto flowering, BH from short stuff

2700k promotes flower growth and 6400k stem growth. It would be good to have a 6400k along with the 2700k when dealing with autos. Try to have more 2700k for flowering and more 6400k for veg, it is good to keep a mixture.

keep to 2700k or any 2400k to 3000k bulbs...

and

keep your current light cycle... it's an auto flower so you want the richest amount of buds until time is up...

will do guys thanks