Par Values of Halides

Jorgens · 04/12/2007, 05:12 PM

I'm sure it's an old question but i can't seem to find a thread. Has anyone tested Par specifics of any 250w MH bulbs? Time for a change.

I'm new to Halides....roughly what % does PAR decrease over a year period? is this the reason to change? or is it due to spectral changes?

I'm testing some 9mo old phoenix and like the color. but significanly dimmer than what i expcetd. I'm assuming due to the age of the bulbs? compared to new odyeesa 10k

thanks for the input.

Jorgens · 04/12/2007, 06:35 PM

DE bulbs that is....

shag26272 · 04/12/2007, 06:43 PM

I think you can find them in the sticky's at the top from Dr. Sanjays site. I think youre looking for the PPFD number

Jorgens · 04/12/2007, 06:46 PM

thats the par? excellent! thanks....

I'm not sur how relevant all that is since it's all SE bulbs. I'm runnin DE. Good generalization on ballast/bulb manufactureres tho. just not sure how much of tha info can carry over to DE....excellent pic comparisons...

shag26272 · 04/12/2007, 06:55 PM

no its not the par its a combination of things instead of par, I really dont understand it all but they have the DE bulbs also, use this

http://www.reeflightinginfo.arvixe.c...t-one-lamp.php

04/12/2007, 05:12 PM	#1
Jorgens Registered Member Join Date: Sep 2006 Location: Sheboygan, WI Posts: 309	Par Values of Halides I'm sure it's an old question but i can't seem to find a thread. Has anyone tested Par specifics of any 250w MH bulbs? Time for a change. I'm new to Halides....roughly what % does PAR decrease over a year period? is this the reason to change? or is it due to spectral changes? I'm testing some 9mo old phoenix and like the color. but significanly dimmer than what i expcetd. I'm assuming due to the age of the bulbs? compared to new odyeesa 10k thanks for the input. __________________ Can't fix stupid Current Tank Info: 180g Acrylic, mixed reef, 55 fuge,DSB,

04/12/2007, 06:35 PM	#2
Jorgens Registered Member Join Date: Sep 2006 Location: Sheboygan, WI Posts: 309	DE bulbs that is.... __________________ Can't fix stupid Current Tank Info: 180g Acrylic, mixed reef, 55 fuge,DSB,

04/12/2007, 06:43 PM	#3
shag26272 Registered Member Join Date: Sep 2001 Location: New Orleans, LA Posts: 3,088	I think you can find them in the sticky's at the top from Dr. Sanjays site. I think youre looking for the PPFD number __________________ .

04/12/2007, 06:46 PM	#4
Jorgens Registered Member Join Date: Sep 2006 Location: Sheboygan, WI Posts: 309	thats the par? excellent! thanks.... I'm not sur how relevant all that is since it's all SE bulbs. I'm runnin DE. Good generalization on ballast/bulb manufactureres tho. just not sure how much of tha info can carry over to DE....excellent pic comparisons... __________________ Can't fix stupid Current Tank Info: 180g Acrylic, mixed reef, 55 fuge,DSB,

04/12/2007, 06:55 PM	#5
shag26272 Registered Member Join Date: Sep 2001 Location: New Orleans, LA Posts: 3,088	no its not the par its a combination of things instead of par, I really dont understand it all but they have the DE bulbs also, use this http://www.reeflightinginfo.arvixe.c...t-one-lamp.php __________________ .