For those who are looking to get good lighting for their sump or nano, give this a try.
Pick up this 23 W spiral Daylight CF self-ballasted bulb for $7.99 at Home Depot
Then go Canadian Tire and buy this clip on reflector (or any regular bulb socket)
Then you get this for lighting on the sump.

Note the size of my chaeto ball (which grew from a baseball size) in less than a month.
This is a real no-brainer for DIY challenged people. Just find a light socket that will fit into your canopy of your nano, screw in the bulb, plug it in and turn it on.
There is no K rating on the bulb but it looks around 5500. I'm sure the stats are somewhere on Philips website but i'm too lazy to search. Regardless, its very white enough for me.