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06/05/2008, 09:48 PM
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#1 |
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Registered Member
Join Date: Sep 2005
Location: Tampa
Posts: 32
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(2) 400 watt single ended metal halide bulbs inside lumenarc?
hi, i have a lumenarc 3 pendant with the socket for a single ended mogul bulb, 400 watts. would there be any problem in me taking out the socket and drilling another hole to put in another 400 watt bulb? the bulbs would be side by side. i have seen a similar reflector with 2 bulbs in that configuration, but i cost like $1000 dollars. any thoughts? thanks
victor |
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06/06/2008, 11:49 AM
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#2 |
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Moved On
Join Date: Oct 2007
Location: Phoenix, AZ
Posts: 80
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Im sure you could make it work if it fits. I have a friend that has done two 175s in a fixture like it. You should call up lumenarc and ask them if they think it would hold up to extra heat.
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06/06/2008, 01:28 PM
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#3 |
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Richmond Reefer
Join Date: Feb 2006
Location: Richmond, VA
Posts: 5,837
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I think you'd loose a significant amount of efficiency. Lumenarcs are designed to get as much reflected light into the tank from what is esentialy a point source of light (the arc in your MH bulb). If you put 2 bulbs in the reflector, then the light source is no longer in the spot the reflector was engineered for.
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_______ Pearson _______ Current Tank Info: Various tanks of various sizes with various gear. |
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06/06/2008, 01:37 PM
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#4 |
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Registered Member
Join Date: Dec 2003
Location: SF
Posts: 1,049
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Pearson is right. Don't do it. You'll probably end up with an effective 5-600 watts of light out from 800watts supplied. You'll also have mega heat issues and will need to actively cool and will also likelyhave shortened the lifespan of the bulbs with the heat.
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-Tony |
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06/06/2008, 03:15 PM
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#5 |
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Where's Lahey?
 
Join Date: Dec 2005
Location: Montara, Ca.
Posts: 1,392
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Check out Thales tank, he has factory dual bulb lumenarcs, I think it's safe to say it works for him.
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"Nobody wants it admit they ate nine cans of ravioli, but I did and I'm ashamed of myself." Ricky Current Tank Info: on the verge of crashing at any moment |
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06/06/2008, 04:45 PM
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#6 |
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Registered Member
Join Date: Dec 2003
Location: SF
Posts: 1,049
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well, think of going from T5HO --> PC. That is the same optics arguement as 1x400 -->2x400 in the same reflector.
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-Tony |
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06/06/2008, 06:17 PM
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#7 |
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Registered Member
Join Date: Sep 2005
Location: Tampa
Posts: 32
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how do i see thales tank??
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Victor D. Cruz Current Tank Info: none at the moment!!! |
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06/06/2008, 08:21 PM
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#8 | |
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Where's Lahey?
Join Date: Dec 2005
Location: Montara, Ca.
Posts: 1,392
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Quote:
 AFA, Thales tank, I'll look around the post where he was showing off his new toys seems to not have a pic right now, I'll see what I can find though.
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"Nobody wants it admit they ate nine cans of ravioli, but I did and I'm ashamed of myself." Ricky Current Tank Info: on the verge of crashing at any moment |
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06/06/2008, 08:45 PM
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#9 |
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Where's Lahey?
Join Date: Dec 2005
Location: Montara, Ca.
Posts: 1,392
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__________________
"Nobody wants it admit they ate nine cans of ravioli, but I did and I'm ashamed of myself." Ricky Current Tank Info: on the verge of crashing at any moment |
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06/06/2008, 11:42 PM
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#10 |
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Registered Member
Join Date: Aug 2004
Location: balto md
Posts: 236
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The way i do this is 2 de diy reef 250 .....you will have par better than a hqi 400....you can have both on for 4 hrs ...stagger the lighting ....works great
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