Heat mats....
23w daylight spectrum cfl per every tray or 2 of cuts.
used to hang one over my 60 site EZ cloner also.
u want weak light for fast roots bro... i agree with dude above, go cheap and spend ur money elsewhere in your setup
good luck.
Root zone temp seems the critical factor and type of light much less important from what I have seen
If it comes to cloning success rate, I agree with foomar. Temperature is more important than light. Too cold, nothing or extremely slow, too warm, rot and slime (at least with my cloning technique)
Used most types of lights or cloing but settled on Constant Color CMH from GE.
Retro White and Master Color from Phillips did not work quite as well.
Magnum and HydroGrow LED were also used, again, not the equal of GE Constant Color.
Unrooted clones get 75-100 umol and 150-200 when roots start.
About a meter from the plants with 400 watts with a white enamel reflector is approximate for new clones and 75 cm for newly rooted.
All the lights grew clones, GE just makes them a little greener.