I just pick up a 70w HPS flood light from the home de-pot for 45.99 I know its only 70w but i wanted something not real expensive and figured this would be better than going with a bunch of spiral cfls. I am trying to find some info on lumens and what not and cant the bulb is a polarlites 70w and supposed to last 2400 hrs so it is not a very good bulb but i hope it will work alongside of my four 40w fluoro tubes, anyone ever use any low wattage hps flood lights? is this light worth using or should i return it? i know compared to my fluoro tubes it's great but what about compared to a bunch of cfls???