here's my .02~ yes you can flower but yields will be commensurate to the power consumed....so don't expect yields more than .5gr/watt...if you use 180 watt you will end up with around 90gr

with experience in using all LED to flower and all HPS i find that each lighting source has specific benefits when combining HPS and LED together...i will do a thread soon showing a mixed lighting grow....here is some raw data....600w HPS/300w LED over a 3x3 tray doing SOG yielded 603gr...1000w HPS over same setup and same strain yielded 435gr was best yield acheived...so basically it all depends what your end goals are with what you want to achieve :thumbsup: