After reviewing the chlorophyll absorption chart in this section, Im thinking about switching lamps. Currently I am using an Eye hortilux 400w MH 4200k, and growth is slow. Im thinking of maybe switching to the Eye 400w 6500k clean arc. Has anyone tried this bulb? Any thoughts on my switch? Any input is appreciated. Eye 4200k specs - http://www.eyehortilux.com/tb/metalhalide/EQS-N-52-78-53941.pdf Eye 6500k specs - http://www.eyelighting.com/tb/MH/CleanArc/EQS-N-52-78-57881.pdf