lighting

okay, i just got a new ten g and it has a 13 watt florescent bulb in it, the horse shoe shaped kind. it is set up so that i can remove the torch(or whatever the light fixture is called) and move it to one side and install another one on the other side. where can i buy one of these? i can't find the brand name anywhere on the tank/hood. the tank came with a stand/heater/aquaclear 20 though, so it was a good deal. i just want to plant it asap

ok. thanks

the light is Ll shaped only longer. the whole fixture has a square base thing that slides into a slot type thing to hold it in place which is why i'm not sure that the hardware store will have them or if i would have to figure out what brand it is and special order.