I remember a long time ago there was a question about incandescent vs. fluorescent lighting. And with that in mind, I went to Wal-Mart, looking for something to buy; they had a specifically plant growth-enhancing bulb that was incandescent. Isn't that bad? The heat, the cheapness, all of that? As I furrowed my brow in confusion, I remembered that I just read another post on here in which someone said that incandescent bulbs will just heat your water and suck up your electricity, and that fluorescent was the best of the two choices. But now there's an incandescent growth-enhancing bulb out there, and I'm totally thrown off again. Can anyone set me straight?