i use a light from wally world, but its across the isle from the swirly ones...
It looks like a flood light, 65 watts, called a "show and grow" for plants...they also sell an incandescent bulb for plants as well, but they dont last very long...
the floodlight type works well, is cheap, easy to find, and I have it in one of those cheap aluminum reflectors ...painters light i think they are called..
mine even has salt build up on it from splashing, I'm surprised it didnt break...but i guess they are thicker glass than a normal incandescent..