UV and glass?

sasquatch · 06-10-2007, 07:49 PM

Just read an article that states glass is opaque to UV, does that mean normal glass can be used to shield HQI bulbs? I always thought it was a special glass but now I think about UV sterilizers and they require a quartz tube. Information overload on a sunday night, sad, very very sad lol. Steve

Woodstock · 06-10-2007, 08:26 PM

I think you can use regular glass to sheild DE bulbs but I'm tagging along to find out for sure.....

chris&barb · 06-14-2007, 12:53 PM

Glass and UV Penetration </head>

sasquatch · 06-15-2007, 07:57 PM

Thanks Chris and Barb, I did read that before but am wondering about sheilding hqi bulbs. Steve

CATALYST · 06-15-2007, 08:13 PM

Regular glass doesn't have any super UV quality to it. I framed pictures for 13 years and dealt with various kinds of UV and conservation types of glass. They also make glass with different types of minerals to change the color clarity as well...white will look more white and less blue or green. A picture hanging on the wall that gets sun with regular glass will fade a lot faster than one that has a UV filter glass. Most of the time, the UV filter on the glass is actually a coating on one side.

sasquatch · 06-15-2007, 08:31 PM

so does anybody know what glass is used in hqi hoods? the only thing Ive seen so far is corning ware

CATALYST · 06-15-2007, 08:46 PM

I'm pretty sure it's a tempered UV.

chris&barb · 06-16-2007, 12:33 PM

Quote:

Originally Posted by CATALYST

Regular glass doesn't have any super UV quality to it. I framed pictures for 13 years and dealt with various kinds of UV and conservation types of glass. They also make glass with different types of minerals to change the color clarity as well...white will look more white and less blue or green. A picture hanging on the wall that gets sun with regular glass will fade a lot faster than one that has a UV filter glass. Most of the time, the UV filter on the glass is actually a coating on one side.

its funny you mention pictures and uv glass because i also found this link when i was looking Ukiyo-e Gallery

chris&barb · 06-16-2007, 12:38 PM

from the first link "Most window glass will absorb a large fraction of the U.V. radiation."

its my understanding that the glass the coralife uses for it DE bulb fixtures is not UV glass, just regular plate glass

sasquatch · 06-16-2007, 01:24 PM

That was my suspicion as well, I checked with my local glass shop they had no idea even for green house glass, its a conspiracy lol

06-10-2007, 07:49 PM	#1 (permalink)
sasquatch Brunt of all Jokes~ Join Date: Aug 2006 Location: the very farthest west coast of canada Posts: 8,917 View Gallery Karma Komment Add yours!	UV and glass? Just read an article that states glass is opaque to UV, does that mean normal glass can be used to shield HQI bulbs? I always thought it was a special glass but now I think about UV sterilizers and they require a quartz tube. Information overload on a sunday night, sad, very very sad lol. Steve

06-10-2007, 08:26 PM	#2 (permalink)
Woodstock The Wand Geek was here. ;) Join Date: Nov 2003 Location: North Carolina Posts: 22,553 View Gallery Karma Komment Add yours!	Re: UV and glass? I think you can use regular glass to sheild DE bulbs but I'm tagging along to find out for sure..... __________________ ~Doni Marie~ *GOT ICH???* ~120 Reef Chronicle ~ *~Breeding Picasso Clownfish~* "Energy and persistence conquer all things." Benjamin Franklin __________________________________________________ ______________________________________________ 120 mixed reef, dual Reeflux 10k 250 MHs, dual Geiseman Actinic T5s,Neptune AC III, ASM g3, 2x Korallia #3, Mag 9.5 return

06-14-2007, 12:53 PM	#3 (permalink)
chris&barb Midas Blenny Join Date: Jul 2005 Location: Delaware, USA Posts: 87 View Gallery Karma Komment Add yours!	Re: UV and glass? Glass and UV Penetration </head> __________________ http://profile.myspace.com/index.cfm...id=278 941062

06-15-2007, 07:57 PM	#4 (permalink)
sasquatch Brunt of all Jokes~ Join Date: Aug 2006 Location: the very farthest west coast of canada Posts: 8,917 View Gallery Karma Komment Add yours!	Re: UV and glass? Thanks Chris and Barb, I did read that before but am wondering about sheilding hqi bulbs. Steve

06-15-2007, 08:13 PM	#5 (permalink)
CATALYST Achilles Tang Join Date: Mar 2007 Location: SoCal Posts: 884 View Gallery Karma Komment	Re: UV and glass? Regular glass doesn't have any super UV quality to it. I framed pictures for 13 years and dealt with various kinds of UV and conservation types of glass. They also make glass with different types of minerals to change the color clarity as well...white will look more white and less blue or green. A picture hanging on the wall that gets sun with regular glass will fade a lot faster than one that has a UV filter glass. Most of the time, the UV filter on the glass is actually a coating on one side.

06-15-2007, 08:31 PM	#6 (permalink)
sasquatch Brunt of all Jokes~ Join Date: Aug 2006 Location: the very farthest west coast of canada Posts: 8,917 View Gallery Karma Komment Add yours!	Re: UV and glass? so does anybody know what glass is used in hqi hoods? the only thing Ive seen so far is corning ware

06-15-2007, 08:46 PM	#7 (permalink)
CATALYST Achilles Tang Join Date: Mar 2007 Location: SoCal Posts: 884 View Gallery Karma Komment	Re: UV and glass? I'm pretty sure it's a tempered UV.

06-16-2007, 12:38 PM	#9 (permalink)
chris&barb Midas Blenny Join Date: Jul 2005 Location: Delaware, USA Posts: 87 View Gallery Karma Komment Add yours!	Re: UV and glass? from the first link "Most window glass will absorb a large fraction of the U.V. radiation." its my understanding that the glass the coralife uses for it DE bulb fixtures is not UV glass, just regular plate glass __________________ http://profile.myspace.com/index.cfm...id=278 941062

06-16-2007, 01:24 PM	#10 (permalink)
sasquatch Brunt of all Jokes~ Join Date: Aug 2006 Location: the very farthest west coast of canada Posts: 8,917 View Gallery Karma Komment Add yours!	Re: UV and glass? That was my suspicion as well, I checked with my local glass shop they had no idea even for green house glass, its a conspiracy lol

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