Travdawg,
The hood contains 4 compact fluorescent bulbs, 2 in each row. If you run just
one row, it should be fine. Running 3 would make it much brighter on one side
of the tank, probably not what you're after. Ask the vendor how the bulbs are wired-in, parallel or series. Hopefully you can run 2 if you want with no problems.

HTH,

Bill Ruyle