I just had a thought, what about your bulb? I personally have never dealt with HID lighting, but I know that bulbs degrade with time. I also know there are serveral different brands with mixed reviews. Just something to ponder I guess, someone with more HID knowledge would have a better idea than me.
bonedaddy420 Reviewed by bonedaddy420 on . Plant Problem What is your experience level? (first timer, novice, experienced...) dumb novice Your Equipment: .1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's) 1: 400w hps .2) Distance from tops? 2: ~8 inches .3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) 3: bare bulb Rating: 5