I agree..without posting actual numbers and such, the input/output ratio for metal halides is unparalleled by any fluorescent combination.
I went to MH for no other reason than it's easier to ship 2 MH lamps than 8 48" fluorescent bulbs...funny enough, I've downsized to a T5 only setup because I dropped something in my tank and killed 90% of my corals and can't afford to replace them..so I didn't see a need to waste $20/month on lighting my tank with halides.
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