don't take this as a criticism but i think you're gonna grow to
hate that light.

and no shit man, you should spend some time reading some
of the CFL threads. there are many people here growing some
kick ass buds with $20.00 - $30.00 worth of CFL's, myself included.

some of the disadvantages to the light you already have are that,
it's heavy, the spectrum of light isn't right for all stages of life and,
with the ballast built in like that, you've got a lot of heat concentrated
just above your plants

use it while you have it but start researching alternatives that are
more productive and cost-efficient