how many nano meters does a 250watt 20k or 10k MH bulb peek at??

[jugger]

does anyone have info on what wave length most of the light from a 250 watt 20k or 10k MH light peeks at in nano meters???
thank you

 

[bang guy]

It varies by bulb and even ballast firing the bulb.

 

[jugger]

thats kinda what i thought....how about this....250 watt XM DE 20k on a electroic ballast......or if you have an example of something similar....or even a range ...

 

[bang guy]

450nm - 480nm would be a typical peak for a 20,000K MH bulb. The 10,000K would probably have 2 or even 3 distinct peaks - one similar to the 20,000K and another near the 600nm range.

 

[jugger]

crap thats not what i wanted to hear!!!!!!!!!!!! the glass i have to filter the UV from the DE bulb filters out 100% at 250nm and only 15% at 350-900nm....im screwed

 

[jugger]

i cant find tempered glass in the shape of a cylinder....i can only find pyrex in a cylinder shape...any ideas.....do you think 100% at 250nm will be enough?? any idea what the % is for tempered glass at those ranges is?

 

[jugger]

no pendant... alittle DIY project i will post pics of when i get a chance

 

[bang guy]

I don't see what the problem is

 

[jugger]

Originally posted by Bang Guy
I don't see what the problem is

with what type of glass????? the number of UVs at different nm being filtered???? please let me know becasue i need help....(in more ways than one):nervous:

 

[bang guy]

Your Pyrex is going to work just fine for a fish tank depending on its thickness. Is it more than 1/8"?

 

[jugger]

you think so??? why do you think that...(the only reason i ask is i would like to set myself at ease and im confused)
and yes the wall thinkness is 0.1377" thick...thank god that should help

 

[jugger]

thanks for the replys..... what kind of UV does a 250watt DE XM 20k bulb put out???? a b or c????
UV-A covers the wavelength range 320-400 nm. UV-A is not absorbed by the ozone layer and is the least harmful UV radiation.
UV-B covers the wavelength range 280-320 nm. UV-B is more energetic than UV-A, and is partially absorbed by the ozone layer. UV-B rays that are not filtered out cause sunburn and other harmful effects to humans.
UV-C covers the wavelength range 100-280 nm. UV-C is the most dangerous form of UV radiation,
the glass i have blocks 100% up to 250nm and only 15% at 350-900 nm
will my glass work