don you said you went to hps for lumins , but do you get as much floor space with a 400 hps as cfl's ? I've got 9,-23=100 watt, for 207 actual watts , and can grow 4 big plants in a 4X4 room ,and my other is 2, 65=300watt ,and 1 23=100 , for 153 actual ,and grow 2 big plants in that tent, for a total of 360 watts in both rooms , So my question is , can you grow 6 plants under a 400hps ?? I would like to know in case i decide to change also..