Ok i am trying this 8 lowryders . I took 2 -2'x4' floresent light with 4 bulbs each they are the sides. The i took 2 4'x1' they hold 4 bulbs each. a total of 16 40watt cool whites. a total of 640 watts in a 2foot high 4 foot long area. each plant is in 2.5 gallon containers.this is the first time i will use all flouros the flower. I will let you know in about 8 weeks what i yeilded.. does anyone have any comment on whether this is a good set up?