Agreed. The dual fixture is pretty much just right for your tank. If you experience algae and you suspect your light is to blame, you can always raise it up. I checked one of these fixtures out the other day...they're very bright and nice.
Thank you for clearing that up! Just for reference, know of any good T5 HO companies? I enjoy my low to medium set up.
It's really your preference for T5HO fixtures. I guess you need one with a ballast that can handle the wattage of T5HO bulbs. Popular bulbs are German Gisemann bulbs, but I'm sure other brands work fine as well. I've heard good things about FishNeedIt, Tek by Sunlight Supply, Coralife, and Aqueon fixtures.