MH question

Jsn · 07/29/2008, 02:20 PM

What is the difference between a rounded bulb and a slim bulb? both are 250watts mogule ended.

abulgin · 07/29/2008, 02:38 PM

Never heard of a slim bulb. Pictures/links?

Fish_wiz2 · 07/29/2008, 02:45 PM

I think he is talking about SE and DE/HQI

Jsn · 07/29/2008, 02:47 PM

yah the SE bulbs. Oops.. My Bad!

abulgin · 07/29/2008, 03:10 PM

I'm confused. Mogul base is single ended. Double ended is HQI. Which are you asking about?

Jandree22 · 07/29/2008, 03:23 PM

perhaps your confused between...

Bulb A:

and

Bulb B:

???

If that's what you're getting at, nowadays most if not all MH bulbs for reef usage are 'slim' like Bulb A... but a do remember seeing Bulb B style years ago. Ultimately, nothing significant is different, other than Bulb A giving your more usage of your reflector for maximizing efficiency.

Jsn · 07/29/2008, 03:43 PM

Thanks Joel. I'm asking because at my work they have Bulb B and they are getting rid of them. There's about 10 bulbs. Some are new and some are old. Bulbs aare made by Phillips. Should i get them? and use them for my tank?

abulgin · 07/29/2008, 03:48 PM

what's the temp on the bulbs? Probaby won't fit in your fixtures.

Jsn · 07/29/2008, 03:52 PM

Where does it say they temp?

Jandree22 · 07/30/2008, 05:51 AM

No, donâ€™t get them. They may not fire depending on your ballast type, but more importantly like abulgin was getting at, being â€œfrom workâ€, I highly doubt theyâ€™re appropriate for a reef tank. To the naked eye they may appear white, but over your tank, my bet is theyâ€™ll be a terrible yellow color (ie, <= 6,500k).

Furthermore, what wattage are they? Industrial MH bulbs are routinely like 1,000W or maybe even more. Another thing that wouldnâ€™t make your MH ballast very happy probably

If you could get more info on them like a 6,500+ Kelvin temp and proper wattage, I suppose it wonâ€™t hurt to give them a try if theyâ€™re dirt cheap, but reef MH bulb prices have dropped big time over the past few years IMO, and this is one area you shouldnâ€™t be skimping on for sure.

abulgin · 07/30/2008, 06:09 AM

can you tell us what the markings on the bulb say?

inachu · 07/30/2008, 07:08 AM

the round bulbs are very big. seen a few at my LFS.

07/29/2008, 02:20 PM	#1
Jsn Registered Member Join Date: Apr 2007 Posts: 169	MH question What is the difference between a rounded bulb and a slim bulb? both are 250watts mogule ended.

07/29/2008, 02:45 PM	#3
Fish_wiz2 Mangroves are kool. Join Date: Nov 2007 Location: Chicago Posts: 5,246	I think he is talking about SE and DE/HQI __________________ -The Wiz Current Tank Info: Elos Mini Seahorse Tank, 2500 gallon Koi pond

07/29/2008, 03:23 PM	#6
Jandree22 Registered Member Join Date: Jul 2003 Location: Middletown PA Posts: 762	perhaps your confused between... Bulb A: and Bulb B: ??? If that's what you're getting at, nowadays most if not all MH bulbs for reef usage are 'slim' like Bulb A... but a do remember seeing Bulb B style years ago. Ultimately, nothing significant is different, other than Bulb A giving your more usage of your reflector for maximizing efficiency. __________________ Tank Info: 120g

07/30/2008, 05:51 AM	#10
Jandree22 Registered Member Join Date: Jul 2003 Location: Middletown PA Posts: 762	No, donâ€™t get them. They may not fire depending on your ballast type, but more importantly like abulgin was getting at, being â€œfrom workâ€, I highly doubt theyâ€™re appropriate for a reef tank. To the naked eye they may appear white, but over your tank, my bet is theyâ€™ll be a terrible yellow color (ie, <= 6,500k). Furthermore, what wattage are they? Industrial MH bulbs are routinely like 1,000W or maybe even more. Another thing that wouldnâ€™t make your MH ballast very happy probably If you could get more info on them like a 6,500+ Kelvin temp and proper wattage, I suppose it wonâ€™t hurt to give them a try if theyâ€™re dirt cheap, but reef MH bulb prices have dropped big time over the past few years IMO, and this is one area you shouldnâ€™t be skimping on for sure. __________________ Tank Info: 120g Last edited by Jandree22; 07/30/2008 at 06:07 AM.

07/29/2008, 02:38 PM	#2
abulgin Registered Member Join Date: Jul 2007 Location: Baltimore, MD Posts: 2,664	Never heard of a slim bulb. Pictures/links?

07/29/2008, 02:47 PM	#4
Jsn Registered Member Join Date: Apr 2007 Posts: 169	yah the SE bulbs. Oops.. My Bad!

07/29/2008, 03:10 PM	#5
abulgin Registered Member Join Date: Jul 2007 Location: Baltimore, MD Posts: 2,664	I'm confused. Mogul base is single ended. Double ended is HQI. Which are you asking about?

07/29/2008, 03:43 PM	#7
Jsn Registered Member Join Date: Apr 2007 Posts: 169	Thanks Joel. I'm asking because at my work they have Bulb B and they are getting rid of them. There's about 10 bulbs. Some are new and some are old. Bulbs aare made by Phillips. Should i get them? and use them for my tank?

07/29/2008, 03:48 PM	#8
abulgin Registered Member Join Date: Jul 2007 Location: Baltimore, MD Posts: 2,664	what's the temp on the bulbs? Probaby won't fit in your fixtures.

07/29/2008, 03:52 PM	#9
Jsn Registered Member Join Date: Apr 2007 Posts: 169	Where does it say they temp?

07/30/2008, 06:09 AM	#11
abulgin Registered Member Join Date: Jul 2007 Location: Baltimore, MD Posts: 2,664	can you tell us what the markings on the bulb say?

07/30/2008, 07:08 AM	#12
inachu Moved On Join Date: Mar 2008 Location: Maryland, metro area Posts: 1,219	the round bulbs are very big. seen a few at my LFS.