If you're planning on having stony corals (esp. SPS), you'd be best with a 3x250 W MH arrangement + your T5HO actinic suppliment.
That being said, I love my LED's. I don't have algae problems with them. The corals love them. They don't heat up the tank. I can ramp up and down the output and control the white/purple colour mix. They've low power requirements. The only thing that one wouldn't like about them is the cost.
I've a green stag and it grows like a weed. They're famous for that.
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180 gal tank, 50 gal sump, PM RFCa6 Ca Reactor, SWC Extreme 250 1A Cone Skimmer, Tunz Osmolator ATOF, Aquacontroller Apex, Aquaillumination Sol Super Blue 6 x 75w Units, Acros/Softies/LPS/Mushrooms/Zoos, Purple/Powder Blue/Yellow Tang/3xBlue Chromis/2xTomato Clown/Lawnmower Blenny
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