I would justt like to add a bit of backround on myself and lighting......
I have been studying lighting and intensity for 10+ years. My exp. stems from my keeping and propagation of SPS corals. I can assure you that I have tested virtualy every type of lighting availble to us here in the US.
You can use fixtures and certain ballasts from local hardware places, but the bulb itself will need to be specialized, unless of course you can cope with the yellow color. 10K and up is where you actualy have a whiter bulb.