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Thorsx
11/02/2004, 11:31 AM
It has been a year since I set up the lighting over my 180. Fixture is an Aqua Space light.

I want to get new 250w 20k bulbs. I am confused by all the the brand and initial options.

need to compare:
Blueline HQI
XDE HQI
Geisemann Mega Chrome DE
Ushio HQI
Aqualine Musche HQI

I have been unable to find an Aqualine 20k double ended bulb.
What Does HQI stand for? XDE? DE?

Maybe someone has a link to bulb comparisons. Thanks.
johnson1
11/02/2004, 11:55 AM
Sanjay Joshi has written several excellent articles on metal halide lighting. Link to Advanced Aquarist's magazine: http://www.advancedaquarist.com/index/.

Look at the following:
Volume III, Issue 10 'Spectral Analysis of 400W Double Ended Lamps' and 'More Spectral Analysis of 250 W DE Lamps and Ballasts.

Volume III, Issue 9 (September 2004)
'Ice Cap/150 HQI'

Volume III, Issue 8 (August 2004)
'Spectral Analysis of 250 W Mogul Base Metal Halide, Part II'

Volume III, Issue 7 (July 2004)
Spectral Analysis of 250 W. MH Mogul Base, Part I'

Volume III, Issue 5 (May 2004)
'More Spectral Analysis of 150 W DE MH'

Volume III, Issue 2 (February 2004)
'Spectral Anlaysis of 250 W. DE 10K...'
'Spectral Analysis of 400 W Lamps...'

Additional articles in Volume 1 and 2.

Regards, John
Navymedic
11/02/2004, 02:05 PM
This should be made into a sticky ;)

On the other hand I'm looking to trade my Sunburst 250w MH for a HQI retrofit kit, anyone have one....Might even go with a 150w setup...
Sanjay
11/02/2004, 02:32 PM
Yeah, all the pertinent info is in the articles. If you want to compare lamps and look at all the data in one place go to this website that I created

http://www.reeflightinginfo.arvixe.com

sanjay.
Thorsx
11/02/2004, 05:40 PM
Thanks for all the links. Now I can make sence of all the post it notes lying on my desk. After this afternoons reading, at least I now know DE stands for double ended. Sanjay, thanks for the added site link.
johnson1
11/02/2004, 11:09 PM
Sanjay, many thanks for sharing the results of your hard work. Nice site too. Perhaps sometime you can visit ORCA.

Regards, John Vandemark
ORCA Public Relations