.i have 3 plants under 3 of those 125 watt drop lights..

I'm still a little fuzzy, on what kind of lights these are?...incandescent light bulbs?...they are worse than halogen bulbs. The CFLs are the best, next to HID lights. Desribe your "droplight"

Above all that: you need a reflector to send the light down and reflective walls to catch light too. (an inclosed space)...need much more info...to be of any real help.