Switchin to 12/12 need help

Hey this is my first grow and i kinda need some imput on what to do when I switch it to flower. What kind of lights do I use for the heat I guess I think i am supposed to use 2500K lights but im not really sure I have six lights and some nutes so some help would be nice!! THANKS!

dont use nutes 2 weeks prior to harvest, straight water. if you dont know the difrrence in lights the one you should be using for flowering should have a orangy hue and doesnt give off alot of light as to mimic the shorter days