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Old 03-22-2004, 01:10 PM   #11
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Better yet, put a reflective coating on the top half of the bulb. This will reflect all of the light in the downward direction. What kind of coating to use? I don't know. But thi is typically done in car headlights and industrial applications.

Jim
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Old 03-22-2004, 03:16 PM   #12
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Also if you are thinking of using HID lighting, you may want to drill small 1/8 holes on the apex "above" the bulb. This will allow for heat to be channeled out and behind the reflector and carried out by a fan. The cooler you keep this area the longer the bulb will last. The small holes will not effect the reflecting too much. Of course you may lose some but I don't think you will be able to measure it.

Mike
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Old 03-22-2004, 03:36 PM   #13
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I'm not using it for any type of bulb ATM.

I was just sitting here, contemplating and planning the hood I'll build for my new SW tank and just thought " Heat makes bulbs die quicker, reflectors reflect heat back into the bulb... *lightbulb* Lets just do thisS "
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Old 03-22-2004, 04:39 PM   #14
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I am planning on building 2 lights for my 125 gallon. I may try your design, just for the hell of it. We can see how it works out. I have access to a break fro bending and light meter for testing. I just need the time to do this. If I get to this in the next week or so I will contact you and let you know how it turns out. I will post some pics also.

Mike
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Old 07-23-2004, 04:02 PM   #15
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Flat white reflects more than polished steel, only thing better is a mirror.
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Old 07-23-2004, 04:45 PM   #16
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Wow this is an old thread, I forgot about it
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Old 07-23-2004, 06:14 PM   #17
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Me too....
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