It really depends on what kind of plants you want to keep. If it's tough plants like Pothos then a normal "daylight" light is fine. If you are trying to grow less hardy plants you will need to find something that gives out more in the UV spectrum. I notice our article doesn't have anything on light in it. I think we will have to make an addition.

One important thing to keep in mind is that incandescent light and fixtures can give off a lot of heat. Fluorescent bulbs use a lot less power and produce a lot less heat, so bear that in mind before you make your choices.