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-   -   aquamedic pendant halide light shield (http://www.reefcentral.com/forums/showthread.php?t=2657733)

WVfishguy 11/09/2017 10:59 PM

aquamedic pendant halide light shield
 
I have an Aquamedic 250 HQI halide pendant which is missing the glass shield over the bulb. Anyone know where I can order one? I've struck out on the 'net. Also - I understand HQI bulbs need the shield to protect critters from UV. Is there a specific glass I must use for this shielding? Is this shielding completely necessary? I could scavenge a shield from a 150 watt pendant I'm not using.

mcgyvr 11/10/2017 05:59 AM

You can get the glass from aquamedic of course..
http://www.aquamedicusa.com/product-...acement-parts/

Its just regular old tempered float glass..
If the glass from the 150W light fits it will work just fine..

WVfishguy 11/10/2017 02:57 PM

Thank you! I googled Aquamedic before posting and got a message about "unavailable because of robots..." Weird. $40 for a piece of a small tempered glass. Oh well....

mcgyvr 11/10/2017 03:05 PM

Quote:

Originally Posted by WVfishguy (Post 25269671)
Thank you! I googled Aquamedic before posting and got a message about "unavailable because of robots..." Weird. $40 for a piece of a small tempered glass. Oh well....

We have a light here at work that requires some glass over it..The company that sold the light wants $60 for it when it breaks... Our local glass shop sells us the replacement for $4..

You can likely get away without it being tempered too so if you have a local glass shop I'd go there if you know what thickness you need.. Probably just regular "double strength" as they sometimes call it..

WVfishguy 11/10/2017 03:19 PM

I believe - I may be wrong - tempered glass is leaded. I sure as hell know not to try to cut it! I was under the impression the lead protects against (excessive?) UV. Will regular glass do that, or is the HQI UV problem a myth?

WVfishguy 11/10/2017 10:07 PM

Glass company told me it's only heat treatment, no lead. Tempering, like steel. Makes sense. Never mind. Tempering won't affect UV protection, so I'm not going to worry about it. Thank you again, mcgyvr.

mcgyvr 11/11/2017 07:15 AM

^^correct..
There is iron in glass.. and "starfire glass (one brand)" is "low-iron" which improves its clarity..
But yes tempering its just a heat treatment process..

WVfishguy 11/11/2017 08:35 PM

Quote:

Originally Posted by mcgyvr (Post 25270301)
^^correct..
There is iron in glass.. and "starfire glass (one brand)" is "low-iron" which improves its clarity..
But yes tempering its just a heat treatment process..

I remember the iron in glass now - and Starfire was kind of a big deal when it came out. That's what I was thinking of - iron, not lead. Leaded glass is color tinted, as in decorative glass. I've been in aquariums so long I'm forgetting things. Reminds of the story of an old truck driver berating a young trucker: "Boy, I've FORGOT more about trucking than you know!" To which the younger man says; "Old man - you forgot EVERYTHING you knew!" :spin1:


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