uv Glass for MH

miller10 · 09/05/2010, 11:06 PM

well cleaning my MH lights today the UV Glass fell off the table and broke. This is a 150w DE MH and i have heard that the screw in MH lights has a built in UV protection in the light its self but I dont know about the DE. So my question is can you run DE MH light with out the UV Glass covering?

danel · 09/05/2010, 11:14 PM

same happened to me and I was told DE have no protection at all so running it without the glass wouldn't be a good idea.

marioensf · 09/05/2010, 11:30 PM

Mogul base bulbs have the built in UV shield (outer case) but is also recommended to use a glass splash shield to protect from exploding due to a splash.
You need to have that glass replaced before you power the bulb again; nice about it is you may buy a low Iron/Starphire tempered piece of glass.

zoolan70 · 02/21/2011, 02:19 PM

Quote:

Originally Posted by marioensf

Mogul base bulbs have the built in UV shield (outer case) but is also recommended to use a glass splash shield to protect from exploding due to a splash.
You need to have that glass replaced before you power the bulb again; nice about it is you may buy a low Iron/Starphire tempered piece of glass.

Sorry for reviving an old thread, but I'm in the same boat at the OP, and have no idea who the manufacturer is of the fixture. I'm curious what you mean by 'low iron / starphire tempered piece of glass'. I can't find any local glass shop that carries what I want...

Thanks!

marioensf · 02/21/2011, 05:14 PM

Any local glass shop can get a tempered piece of glass, low Iron/Starfire is a bin nicer and pricier, ultra clear glass might be called.
Local glass shops know what a tempered glass is, if they don't know, they are in the wrong business.
Regular glass has a green tint, low Iron/Starfire (trade mark name) lacks the green look.

zoolan70 · 02/21/2011, 06:43 PM

I'm not asking about whether a local shop would have tempered glass, I'm asking about the UV filtering glass. If the only thing 'low iron' means is that is clearer, it doesn't help in my quest. It doesn't matter if the glass is ultra-clear if I'm going to get skin cancer, go blind, and kill all my corals because the UV radiation isn't rejected.

Anyone else have a source, any source, where I can custom order this? Obviously, the folks that make these fixtures can get it, so it must be available, but I've been searching on and off all day, as well as calling glass shops, and no one has what they would consider to be UV-filtering glass for this application.

pimp2daizzo · 02/21/2011, 07:17 PM

im in the same boat

marioensf · 02/21/2011, 08:43 PM

Any tempered glass will work

zoolan70 · 02/21/2011, 09:45 PM

Quote:

Originally Posted by marioensf

Any tempered glass will work

Is all glass UV filtering? I'm pretty sure that isn't the case but that's why I'm asking here.

Humu Humu · 02/22/2011, 08:37 AM

You cannot run a DE MH bulb without the glass filter. It's not safe for your tank or your eyes. I was under the impression that any glass was appropriate. Please chime in and correct me if I'm wrong. Problem with tempered glass is you can't cut it.

marioensf · 02/22/2011, 09:59 AM

Quote:

Originally Posted by zoolan70

Is all glass UV filtering? I'm pretty sure that isn't the case but that's why I'm asking here.

Any tempered glass will work for the MH light; I've done it to nano mods using DE bulbs, you have to order the tempered size correctly; regular plate glass will crack due to the intense heath; another option is ceramic glass but is pricey !!

There's UV filtering glass, the kind used for picture framing to prevent fading on the pictures.

Korrine · 02/22/2011, 01:34 PM

great thread guys! I need to replace one of mine as well

09/05/2010, 11:06 PM	#1
miller10 Registered Member Join Date: Feb 2010 Location: OC714*SoCal Posts: 71	uv Glass for MH well cleaning my MH lights today the UV Glass fell off the table and broke. This is a 150w DE MH and i have heard that the screw in MH lights has a built in UV protection in the light its self but I dont know about the DE. So my question is can you run DE MH light with out the UV Glass covering?

02/21/2011, 06:43 PM	#6
zoolan70 Registered Member Join Date: May 2008 Location: Lakeville, MN Posts: 248	I'm not asking about whether a local shop would have tempered glass, I'm asking about the UV filtering glass. If the only thing 'low iron' means is that is clearer, it doesn't help in my quest. It doesn't matter if the glass is ultra-clear if I'm going to get skin cancer, go blind, and kill all my corals because the UV radiation isn't rejected. Anyone else have a source, any source, where I can custom order this? Obviously, the folks that make these fixtures can get it, so it must be available, but I've been searching on and off all day, as well as calling glass shops, and no one has what they would consider to be UV-filtering glass for this application. __________________ 500 gallon in-wall with 250 extra gallons of sumps / frag tanks / etc behind it.

02/22/2011, 01:34 PM	#12
Korrine You could get a ticket!! Join Date: Apr 2008 Location: Upper midwest Posts: 4,288 Blog Entries: 1	great thread guys! I need to replace one of mine as well __________________ Try to keep in mind that we are all human...mistakes do happen! Be kinder than necessary because every one you meet is fighting some kind of battle. Current Tank Info: 40 breeder - started 9/2011 - platinum perc and sanjay's black photon clownfishes; sps and lps, and soft corals; 250w MH, 20 long sump w Bubble Magus Nac 3.5 skimmer 12g nano cube -serpent star, mini carpet anemones, w 6 sexy shrimp, 150w MH, maxi je

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09/05/2010, 11:14 PM	#2
danel Registered Member. Join Date: Sep 2010 Posts: 170	same happened to me and I was told DE have no protection at all so running it without the glass wouldn't be a good idea.

09/05/2010, 11:30 PM	#3
marioensf Registered Member Join Date: Apr 2006 Location: San Francisco, CA Posts: 2,502	Mogul base bulbs have the built in UV shield (outer case) but is also recommended to use a glass splash shield to protect from exploding due to a splash. You need to have that glass replaced before you power the bulb again; nice about it is you may buy a low Iron/Starphire tempered piece of glass.

02/21/2011, 05:14 PM	#5
marioensf Registered Member Join Date: Apr 2006 Location: San Francisco, CA Posts: 2,502	Any local glass shop can get a tempered piece of glass, low Iron/Starfire is a bin nicer and pricier, ultra clear glass might be called. Local glass shops know what a tempered glass is, if they don't know, they are in the wrong business. Regular glass has a green tint, low Iron/Starfire (trade mark name) lacks the green look.

02/21/2011, 07:17 PM	#7
pimp2daizzo Registered Member Join Date: Jun 2005 Location: ga Posts: 1,098	im in the same boat

02/21/2011, 08:43 PM	#8
marioensf Registered Member Join Date: Apr 2006 Location: San Francisco, CA Posts: 2,502	Any tempered glass will work

02/22/2011, 08:37 AM	#10
Humu Humu lost in the pelagic zone Join Date: Oct 2010 Location: Chicago Posts: 207	You cannot run a DE MH bulb without the glass filter. It's not safe for your tank or your eyes. I was under the impression that any glass was appropriate. Please chime in and correct me if I'm wrong. Problem with tempered glass is you can't cut it.