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Old 01-09-2009, 04:57 AM   #1
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Double end vs single end MH

Which is the better mouse trap...Double end vs single end MH?

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Old 01-09-2009, 09:34 AM   #2
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Six in one, half a dozen in the other
The only difference is a DE bulb must be used with a reflector that has a UV shield and a SE bulb is already enclosed in a UV shield. Also, depending on the specific bulb, they may need a different type ballast.
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Old 01-09-2009, 02:27 PM   #3
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... and most DE hoods/reflectors come with the UV glass shield. Take your pick.
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Old 01-09-2009, 10:05 PM   #4
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Ok...that narrows it down nicely. Does one put out more heat than the other?

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Old 01-09-2009, 10:11 PM   #5
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Well, a 150w DE will put out 25w less worth of heat than a 175w SE (they don't make 150w SE and I'm not sure they make a 175w DE), but a 250w DE will put out the exact same amout of heat as a 250w SE and the same with 400w DE and SE.
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Old 01-10-2009, 12:49 AM   #6
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Just what I was lookin for Capt & cmor!

Gonna go with the SE since they are in stock.

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Old 01-10-2009, 01:32 PM   #7
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Make sure you get a quality bulb. The cheap chinese made ones really are not very good. I tried and Larry convinced me to change. I swithed to Ushio 10k 150w de bulbs and have noticed a huge improvement in coral growth.
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