Didn't AHSupply say the reflectors were basically ineffecient?! You may need to open it up and replace the reflectors, but I don't see how it will change anything since the unit is so cramped together. And maybe you can replace the ballasts with WH ballasts. With a bit of tweaking it may work.
On other hand, their aquariums look amazing; with it's built-in wet/dry filter, digital timers, and an excellent high-quality finish...it looks worth it.