I used the fixture I had and some plywood scraps from other progects and made a hood. It weighs about 20 pounds or so. I did it all today, I still have to sand it down and paint it nice but I don't think it looks that bad for $0 invested in it.
The lighting I'm currently using
Front View, I need to do something about the leakage around the seams.
Lid above the fixture open
Front open to access tank/feed fish
Looking up into the front at the fixture two 72 watt, 5100 K full spectrum T12 bulbs. They sit about 8 inches from the water.