GE metal hallide

**chet-tonja** · 03-23-2002 04:57 PM

Anyone ever use the GE MH bulbs??? What light spectrum are they if you have used them. I was Home Depot today and saw them, then I went to a reef aquaria store and saw the same things. Thanks

**angel101** · 03-24-2002 05:25 AM

Hi there!! Here in Australia, the GE bulb is very popular as it is fairly cheap. The bulbs we use are 6000K, which is okay, if a little yellowish. I have had good growth and colouration of SPS corals under this light. Just remember that GE is a big outfit and the bulb you looked at might not be for aquariom applications and might have a lower Kelvin rating.

Regards Gary.

**Ninong** · 03-24-2002 09:56 AM

Sanjay Joshi tested a 400w 6000K GE lamp here: http://www.animalnetwork.com/fish2/a.../1/default.asp

Note that Sanjay says this lamp is also being sold in the U.S. as a "10,000K lamp from Hungary." Hmmm...

**chet-tonja** · 03-24-2002 10:53 AM

These bulbs did say they were made in Hungary also. They were about $25.

**Ninong** · 03-24-2002 11:17 AM

Originally posted by chet-tonja
They were about $25.

What wattage?

**chet-tonja** · 03-24-2002 10:34 PM

I don't remember all of them, but I believe they had 100, 150, 175, 300 and 400. They may have had a 1000, but not too sure on that. I went to GE's site and most of their bulbs they had listed were in the 3500 to 4500 range. I don't have the exact model #'s of the ones I saw at HD though.

**dattack** · 03-25-2002 04:16 AM

$25 for a 6000K bulb is awesome!

**angel101** · 03-25-2002 07:37 AM

The bulbs we use over here are made in Hungary also. They used to be branded as Tungsram and I think that GE bought them out. If you can get them in the 6000K spectrum, they are very good bulbs for reef tanks.

Regards Gary.

**angel101** · 03-25-2002 07:40 AM

Ninong, the bulb which Sanjay tested was one from Australia which Dallas Warren amoderator on Reefsorg sent over. He runs our BB, Reefing the Australian Way.

Regards Gary.

**chet-tonja** · 03-25-2002 05:59 PM

Tell me what you think! They are going to get back with me on the pricing. The 250 watt is #26683 and the 400 watt is 26685.

http://catalog.gelighting.com/cgi-bi...ContentServer?

**chet-tonja** · 03-25-2002 07:20 PM

The link didn't work...any thoughts? Heat?

Subcategory Arcstream�
Product Code 26683
Description ARC250/T/H/960/E
Watts 250
Lumens (Initial) 19000
Lumens (Mean) 13300
Average Life in Hours 10000
Color Temperature (K) 6000
Color Rendering Index (Ra) CRI (> or =) 90
Operating Position Code HOR
Fixture Type - Open/Enclosed E
Bulb Type T15
Base Type Mog
Max Overall Length (In.) 8.37
Max Overall Length (mm) 213.000
LCL (In.) 5.62
ANSI Ballast Type M80/E
Sales Unit UPC 043168266833
Case UPC 043168266833
Case Quantity 12
Additional Information Clear, Daylight Color

**angel101** · 03-26-2002 04:33 AM

Don't sweat it. I used these bulbs for over ten years on reef tanks and they work great. I can only comment on the 250 watt bulb, but heat was not a problem

Regards Gary.

**PerryinCA** · 03-26-2002 03:57 PM

Has anyone used these in comparison to some of the other lamps such as the venture 5500k, or the Iwasaki. In the tests that Sanjay did, was there any PPFD measurements taken? This has sparked my interest...

-Perry ;;

**Ninong** · 03-27-2002 04:58 PM

Perry,

Here is Sanjay's test of the 400w GE 6000K: http://www.animalnetwork.com/fish2/a.../1/default.asp

**PerryinCA** · 03-27-2002 06:09 PM

Thanks Ninong. I'll be playng with this one soon....

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