Hummm

This sitation is trubling me...i depends on the wattage and the kind of light range...but you will use flowering light so its red...hummm....i think that if you use a 400w hps with a 1000mh when you flower and if you use (in a diffrent grow) 1600 wats of compact fluo...i guess that the fluos will have the best rate...why? a 20w compact fluo USES 20w of light but PRODUCES over 60 watts (aproximation....but usually its more than the duble..usually...it depends on the luigth etc etc). But if you use less han 1600w of fluo...now the HID's will win the contest

hope this will help

P.S: im pretty shure that what i sayed its correct...but correct me if im wrong...im comparing with my 4 year experience...anyway)