Use led lighting!
Ok so I know waaay too much about this topic. Not to be lame, i simply just do.
I have gone the route of Halogen, Incandescent, T5, CF, CF Dual Tube- just to name a few.
When I bought a Par meter, my life as I knew it was forever changed. I will post a link on where to get ~the most fantastic and inexpensive (about 50$ for 48") insanely bright 1 watt cree bulbs with 120 degree lenses guaranteed for 3 years~ Oh and the led bars are waterproof with wireless dimmers.
Regardless of that, my point is, dont get what you will regret because you think you need and furthermore if you are able to solder things (I know, its a challenging trade) jump on Amazon or Ebay and search for 1 watt or 3 watt LEDs and a proper power source. You know the light spectrum drill, find the LEDs and a length of 2 by 4 (paint it metallic on the bottom) glue in the lights and coat the sucker in silicone, a couple clean layers of clear works better than 1 messy long glob. The lil lights should take about 2 weeks to arrive (and about 50-95 cents a pop from China). Be the Martha Stewart of tank lighting on your block and everyone will bow to the luminescent abundance burning threw your windows in the evening. Oh, and you can get the shimmer effect just like HO metal halide too. I will post that link for the led bars soon if you rather not be Martha.