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greenhouse uv lighting

alanvines Oct 06, 2003 10:51 PM

I know there are others who have chams in a greenhouse, but I cannot remember who, Do any of y'all remember????
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http://briefcase.yahoo.com/alanvines2002
2.5 Jacksonii Xantholophus (two red phase fem}
35 Jacksonii Xantholophus neonates
0.0.2 Phelsuma M. Grandis
2.3 Anolis C. with 3 neonates
1 neonate texas blue spiny

Replies (8)

chimbakka Oct 07, 2003 06:57 AM

What kind of glass do you have?I found this:
polycarbonate or
fiberglass panels rather filter less uv than glass

1. Normal window glass, which is composed of silica, will filter out a
substantial portion of the shorter, ultraviolet waves of the spectrum.
Polycarbonate (plexiglass) and lexan do not, nor does "quartz glass",
which is very expensive and rarely used. Double pane glass would
presumably be twice as efficient at filtering out uv.

chimbakka Oct 07, 2003 07:03 AM

Oh, another?
Where do you live? depending on the climate you could just open the glass panes during the day?

alanvines Oct 07, 2003 10:00 AM

Plexiglass lets uv through???? Are you sure? where did you find that info? thanks
>>What kind of glass do you have?I found this:
>>polycarbonate or
>>fiberglass panels rather filter less uv than glass
>>
>>1. Normal window glass, which is composed of silica, will filter out a
>>substantial portion of the shorter, ultraviolet waves of the spectrum.
>>Polycarbonate (plexiglass) and lexan do not, nor does "quartz glass",
>>which is very expensive and rarely used. Double pane glass would
>>presumably be twice as efficient at filtering out uv.
-----
http://briefcase.yahoo.com/alanvines2002
2.5 Jacksonii Xantholophus (two red phase fem}
35 Jacksonii Xantholophus neonates
0.0.2 Phelsuma M. Grandis
2.3 Anolis C. with 3 neonates
1 neonate texas blue spiny

chimbakka Oct 07, 2003 11:31 AM

I did a search on askjeves about greenhouse and glass. I can't remember what site i found that on... It says that it doesn't filter it like glass, but i didn't find a # as far as what % actually is filtered. They just recomended that if you grow plants not under plexi to use supplemental lighting...
I'll seach around for a bit and see what I can find. I just can't imagine using a greenhouse and needing extra uv lights. They cost a lot.. there HAS to be a way around it!

chimbakka Oct 07, 2003 11:44 AM

http://www.crocodilian.com/crocfaq/faq-4.html
- talks about plexiglass in greenhouses not filtering UV

Plastic or plexiglass, such as in airplane windows,
allows both UVA and UVB rays to pass through windows.
Even on rainy days 80% of UV rays come through.
-from http://nsweb.nursingspectrum.com/ce/ce173.htm

http://www.dewtronics.com/tutorials/lasers/leot/course06_mod04/mod06-04.html
-has some tables about different things transmitting uv. The table at the tops says that silica (is this the same as plexiglass) is excellent for transmitting uv

take a look at those and let me know what you think.

iwana Oct 07, 2003 05:30 PM

Silica, quite basically, is sand. I think what they are talking about is raw glass or quartz glass, which is what they used to use for windows before modifying the glass to block the UV rays that were responsible for curtains and furniture losing all their color. Old houses with their original windows have that property -- good for our herps, bad for our furnishings. LOL

Never heard of plexiglass allowing UVB transmission -- if that's true, that would be great! I've always read that you have to remove the plastic cover off of any light fixture you get because it blocks UV.

Thanks for the links, they are interesting! Looking forward to other people's input on this.

Julie, Justin and Frasier the Veiled.

alanvines Oct 08, 2003 11:12 PM

fascinating, never new that either, I wish my Yahoo search was back up, I miss it.....now where is that stack of old house windows........

>>Silica, quite basically, is sand. I think what they are talking about is raw glass or quartz glass, which is what they used to use for windows before modifying the glass to block the UV rays that were responsible for curtains and furniture losing all their color. Old houses with their original windows have that property -- good for our herps, bad for our furnishings. LOL
>>
>>Never heard of plexiglass allowing UVB transmission -- if that's true, that would be great! I've always read that you have to remove the plastic cover off of any light fixture you get because it blocks UV.
>>
>>Thanks for the links, they are interesting! Looking forward to other people's input on this.
>>
>>Julie, Justin and Frasier the Veiled.
-----
http://photos.yahoo.com/alanvines2002
1.5 Jacksonii Xantholophus (two red marbled fem}
35 Jacksonii Xantholophus neonates
0.0.2 Phelsuma M. Grandis
2.3 Anolis C. with 5 neonates
1 neonate texas blue spiny

alanvines Oct 08, 2003 11:09 PM

wowy kazowy, that is very very interesting, and oh so useful. I never would have believed it..... thanks alot.

>>http://www.crocodilian.com/crocfaq/faq-4.html
>>- talks about plexiglass in greenhouses not filtering UV
>>
>>Plastic or plexiglass, such as in airplane windows,
>>allows both UVA and UVB rays to pass through windows.
>>Even on rainy days 80% of UV rays come through.
>>-from http://nsweb.nursingspectrum.com/ce/ce173.htm
>>
>>http://www.dewtronics.com/tutorials/lasers/leot/course06_mod04/mod06-04.html
>>-has some tables about different things transmitting uv. The table at the tops says that silica (is this the same as plexiglass) is excellent for transmitting uv
>>
>>take a look at those and let me know what you think.
-----
http://photos.yahoo.com/alanvines2002
1.5 Jacksonii Xantholophus (two red marbled fem}
35 Jacksonii Xantholophus neonates
0.0.2 Phelsuma M. Grandis
2.3 Anolis C. with 5 neonates
1 neonate texas blue spiny

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