Dr Who nailed it ...
other than the opinionated crap
tagged to the end of his comment,
its very plausible and even possible way,
to avoid those high electricity costs,
even more so next year
I've been using 1x 600w hps,
for the 5.5 but with a single 23w (2700k) cfl
for the 1 hour on in the middle, with great results
PM me to avoid any flaming war you may incur?