replacing MH bulbs
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replacing MH bulbs

This is a discussion on replacing MH bulbs within the Saltwater Aquarium Equipment forums, part of the Beginner Saltwater Aquariums category; --> Hi all, extreme newb question here, hopefully there's a general/standard answer: how do you replace Metal Halide bulbs? In other words, how do you ...

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Old 01-22-2009, 09:05 AM   #1
 
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replacing MH bulbs

Hi all, extreme newb question here, hopefully there's a general/standard answer: how do you replace Metal Halide bulbs? In other words, how do you remove them from the socket? In my case, I have double-ended MH bulbs.

My fixture's user manual doesn't give any diagrams or details on how to remove them from the socket. I tried just pulling on them, but didn't want to use much force as I don't want to break it. Are there usually tabs you have to press, or something you have to do to get the socket to release the bulb? Or just pull on it until it snaps out?

Thanks all, any help is greatly appreciated!
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Old 01-22-2009, 09:21 AM   #2
 
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They have clips that hold them into place... i believe. I don't use them, but i'm certain that yanking on them is bad .
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Old 01-22-2009, 09:26 AM   #3
 
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yeah, I didn't pull hard because I didn't want to break my new fixture :). But its frustrating, they give absolutely NO direction on how to remove the bulbs, and it isn't obvious from looking at it how to open it . And I'm a freaking engineer, it's not like I'm not mechanically-inclined usually .

Anyways, I know as soon as I figure it out or someone tells me, I'll be super-embarassed that I couldn't see how to do it right away. But if the end result is me learning how to remove/replace my bulbs without breaking something, then it's worth it!

I may take a picture of the bulb/socket when I get home, hopefully it's standard and someone can tell me specifically what I have to pinch or press or snap or pull or whatever.
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Old 01-22-2009, 09:39 AM   #4
 
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Quote:
And I'm a freaking engineer, it's not like I'm not mechanically-inclined usually .
I think you've earned this...
















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Old 01-22-2009, 06:48 PM   #5
 
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Alright, got some pics to help out, one with flash one without... someone tell me what the heck I'm supposed to do! The plastic pieces on each end that hold the bulb don't budge, you can see that the are screwed in underneath the bulb. But the bulb itself doesn't budge if I try to pull it out, so what the heck is left?

100_0308.jpg

100_0311.jpg
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Old 01-22-2009, 10:33 PM   #6
 
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a sledge hammer should do the trick.

i was going to say they look to be screwed in but then read your post and you covered that much, i honestly do not know as ive only had PCs and T5s.
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Old 01-22-2009, 10:44 PM   #7
 
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There are round knobs on each end of the bulb. These knobs sit inside a porcelain socket. The porcelain sockets have springs behind them. you should be able to push the bulb in towards one end, allowing the other end to exit it's socket. DO NOT TOUCH THE NEW BULBS (or old bulbs you plan to reuse later) as oils in your skin can cause problems for the life/spectrum of the bulb. I use a soft cloth to handle the bulbs.
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Old 01-22-2009, 10:44 PM   #8
 
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It looks like you may have to push it to one side and pull it out from the other. If that doesn't work, i'll ask a far more exp aquarist..
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Old 01-22-2009, 10:57 PM   #9
 
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Here
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Old 01-22-2009, 11:03 PM   #10
 
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Woot, i was right!
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