My 55 gallon tank kit came with a basic 2 piece full hood with a 15W T8 bulb in each hood. 30W total for a 55 gallon tank just wasnt going to cut it. So this is a quick, cheap, and easy upgrade I did.
First thing I did was take out the existing light fixture. Pretty straight forward. Just take two screws out and then undo the wire nuts and take the fixture out.
These are the materials I used.
4 26W spiral CFL bulbs $15
4 outdoor bulb sockets $1.50 each
4 1.5" pvc tube brackets $0.75 each
roll of aluminum tape $3.50
I covered the inside of the fixture with aluminum tape to act as a reflector. (In hindsight, it probably would have been better just to paint it all white.) Then I screwed the tube brackets into the screw holes, put the sockets in, and connected the wires with the wire nuts. The whole thing took maybe an hour.
And here is one of the completed hoods. By no means is this some serious high tech lighting but as a quick cheap upgrade to "stock" lighting, I think it works great.