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03/20/2008, 06:29 PM
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#1 |
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Registered Member
Join Date: Dec 2005
Location: in your closet
Posts: 670
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MH DE bulb Question
I was wondering which is the propper way to place the bulb in the sockets
Should i have the nipple thing face up towards the fixture or down towards the water? 
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03/20/2008, 06:37 PM
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#2 |
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Premium Member
 
Join Date: Dec 2000
Location: North Charleston, SC
Posts: 1,703
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The nipple that is pointed out is the outer bulb nipple. The position of the outer nipple does not affect lamp performance. Some lamps like the one pictured has the inner bulb nipple sideways and in this case the position does not matter. If the nipple is vertical then the nipple should be up.
Generally you want the inner bulb nipple to point horizontal to up. Some lamps are only recommended up. This assures a more evenly heated arc tube (inner bulb). The nipple can act as a cool/cold spot if pointing down and can affect lamp operation (lamp life, color and light output). |
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03/20/2008, 06:51 PM
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#3 |
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Registered Member
Join Date: Dec 2005
Location: in your closet
Posts: 670
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ok thanks paulErik
that helped alot right now i have the bulbs outer nipple pointed up so i guess that wouldnt really matter though the inner nipple is pointing to the side so i guess thats in the right position too |
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