When do you change Bulbs?

jun_celis · 08/05/2008, 08:26 PM

When do you change your MH DE bulbs?
How about T5? MH runs about 9 hours and T5 about 11 hrs. Is there any calculator? Thanks

jun_celis · 08/06/2008, 07:20 AM

Morning bump

Tater11 · 08/06/2008, 07:58 AM

mh de depending on the brand 6mo to 1yr.my t-5s when they burn out .just used for dusk2dawn effect..

HumbleLobster · 08/06/2008, 09:27 AM

I replace my 150w DE bulbs about every 9 months to a year, depending on what kind of bulb I am on at the time.

chet_lau · 08/06/2008, 10:25 AM

I replace my MH bulbs at about the 1yr mark.

8BALL_99 · 08/06/2008, 10:35 AM

I change my mh once a year. But I just bought a par meter so we shall see how long they last.. I've been told they have the same output at 12 months as they do at 14 -16 months. 99.9% of people just guess. They dont measure the light output on new bulbs or their old ones.. So they just guess when its time.. Also not all bulb ballasts are the same.. So it really shouldn't be a set time for all MH bulbs.. I'm sure a SE xm bulb on a magnetic ballast probably doesn't last the same as one on a Electronic.. Just cause one bulb ballast combo is good for 12 months doesnt mean another isnt shot at 9 months

kdblove_99 · 08/06/2008, 12:07 PM

12-18months

HaroldT · 08/06/2008, 05:33 PM

MH DE bulbs - about once every 9 months.

08/05/2008, 08:26 PM	#1
jun_celis Registered Member Join Date: Oct 2003 Location: Algonquin, IL Posts: 1,487	When do you change Bulbs? When do you change your MH DE bulbs? How about T5? MH runs about 9 hours and T5 about 11 hrs. Is there any calculator? Thanks

08/06/2008, 10:35 AM	#6
8BALL_99 Registered Member Join Date: Sep 2004 Location: Toney, AL Posts: 3,724	I change my mh once a year. But I just bought a par meter so we shall see how long they last.. I've been told they have the same output at 12 months as they do at 14 -16 months. 99.9% of people just guess. They dont measure the light output on new bulbs or their old ones.. So they just guess when its time.. Also not all bulb ballasts are the same.. So it really shouldn't be a set time for all MH bulbs.. I'm sure a SE xm bulb on a magnetic ballast probably doesn't last the same as one on a Electronic.. Just cause one bulb ballast combo is good for 12 months doesnt mean another isnt shot at 9 months __________________ The problem with political jokes is they get elected. OK, so what's the speed of dark? Why do we drive on the parkway and park in the driveway? Isn't is it a bit unnerving that doctors call what they do "practice"? Current Tank Info: Custom Starfire 300,92Gallon,35 Gallon Hex,Two 40Gallons,125Gallon,

08/06/2008, 07:20 AM	#2
jun_celis Registered Member Join Date: Oct 2003 Location: Algonquin, IL Posts: 1,487	Morning bump

08/06/2008, 07:58 AM	#3
Tater11 Registered Member Join Date: Apr 2006 Location: centralia,il Posts: 1,111	mh de depending on the brand 6mo to 1yr.my t-5s when they burn out .just used for dusk2dawn effect..

08/06/2008, 09:27 AM	#4
HumbleLobster Should be Quarantined Join Date: Dec 2007 Location: Tucson Posts: 432	I replace my 150w DE bulbs about every 9 months to a year, depending on what kind of bulb I am on at the time.

08/06/2008, 10:25 AM	#5
chet_lau Registered Member Join Date: Jul 2008 Posts: 52	I replace my MH bulbs at about the 1yr mark.

08/06/2008, 12:07 PM	#7
kdblove_99 Registered Member Join Date: Feb 2006 Location: Frederick,CO Posts: 8,683	12-18months

08/06/2008, 05:33 PM	#8
HaroldT Registered Member Join Date: Aug 2003 Location: Fresno, California Posts: 582	MH DE bulbs - about once every 9 months.