My local Home Depot didn't have CF in the low wattage I wanted (I got a 5gal tank that came with a 15W incandescent hood), but the Wal-Mart across the street had more options than I could have wished - I ended up getting a 2-pack of 10W daylight CF for $7ish. We'll see how the plants do though, I've only had it for a couple days...