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Old 10-02-2008, 01:59 PM   #1
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Lighting question

I am getting ready to purchase my lighting for a 150 gallon reef tank with lots of nice corals (future purchases) and need to know.... 2 metal halides at 400 watts or 4 MH's at 200 watts???? which way would be better as this affects how I build my canopy..

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Old 10-02-2008, 02:08 PM   #2
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As a rule of thumb a MH bulb will cover about a 2' x 2' area. So if you have a 4' 150 then i would go with 2 and if you have a 6' i would go with 3.
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Old 10-02-2008, 03:09 PM   #3
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Either 3 x 250w or 3 x 400w would be the best best, assuming your tank is 6'. You can even get away with 3 x 175w, but the tank is pretty deep. I know a guy who has a 6' 150g and he uses 4 x 175w.
I never heard of and don't think a 200w metal halide bulb exists.
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Old 10-02-2008, 04:30 PM   #4
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yes this is a 6' long tank ...and I meant 250w....(fingers not agreeing with brain)
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Old 10-02-2008, 06:05 PM   #5
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I agree with larry that the 250 or 400 watt would be the best bet. What kind of corals are you planning on?
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