This might help - if you're interested in running more wattage for cheaper.
HID are easy and pretty cheap but are hot and require a bit of extra gear. For cheap cheap grows I would recommend CFLs. To do it cheap focus on 23w CFLs only (other bulb cost much more $/w and $/lumen) and try to find sales. I can find 23w bulb at the dollar store any day for $1/each to $1 for 2. I can often find sales at home depot for 4 packs for $1. For fixtures I would recommend cheap bathroom vanity lights. These 4 bulb fixtures are only $4.50
http://www.lightingdirect.com/maxim-...ection/p860557
You can easily make adjustable reflectors... With Y splitters ($1.50 each) you can easily double your wattage. I can run 368w of CFL for less than $40.
Here's my generic blurb on CFL grows -
I was pulling an oz a week with 388w of CFL here -
First CFL Grow - Help appreciated
I would recommend a 3:1 of 6500K:2700K for veg and the opposite for flower.
Keep them small! CFLs don't do nearly as well with large plants unless you keep a clean scrog or LST. I started flowering at this size -
Dropping bulb between plants maximizes plant absorption without the loss of restrike like you would have with a reflector. I tried to cover the canopy in smaller bulbs and submerge larger bulbs between plants.
I would yield ~ 1oz per plant. With 6 in full flower at a time and two others just rotating into the flower box I was able to harvest a plant per week.
This took place in a 2x3x3.5' area of a small closet.