[APD] Re: German vs American metal halides? (was "help with > finding inexpensive metal halides?")

[Bob_Ashcraft at L-3Com.com]

> Date: Wed, 13 Jul 2005 12:55:34 -0400
> From: Jennifer Malmquist <jenmalmquist at gmail_com>
> 
> my fixture was shipped with 
> "American-made" bulbs that have the glass bulb similar to those you 
> would put in a house lamp (skinny base, round on top), but the sources 
> many of you directed me to was the "German-made" style of a straight 
> bulb (only as thick as the base).  Does anyone know if the German and 
> American made styles are interchangeable?  I don't want to switch styles 

> unless I can be certain that using the German bulb won't cause a fire...

> ...Is there anything about the ballast that would require use of a 
certain 
> bulb type?  Unfortunately the fixtures are no longer sold by the company 

> I purchased them from (I was trying to post the link) but they are 
> pendants made by Hamilton.
> 
> Here is a page that shows the two styles of bulb
> http://www.drsfostersmith.com/product/prod_display.cfm?
> pcatid=3850&N=2004+113353 
> 
> 
> Thank you for your help!!! - Jen

Physically, all mogul based lamps will interchange.  Whether or not 
they'll work depends on what ballast you're using.

There's a good explanation of the differences here:

http://www.reefcentral.com/forums/showthread.php?s=&threadid=201570

Bob

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