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Old 10-02-2006, 09:59 AM   #1
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How often to change bulbs?

I was wondering how often I should change my bulbs. I have 4x96 power compacts. They light my 150 gallon FOWLR. Also by changing the bulbs, will that help algae from growing.

150 Gallon FOWLR
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Old 10-02-2006, 10:19 AM   #2
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I'm not sure, maybe 6-9 months and yes, if they get old, the spectrum of the light will change, possibly causing an algea outbreak.

Age is relative, you are only as old as you act....of course, this works in reverse....

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Old 10-02-2006, 10:39 AM   #3
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If you are running your lights 8 hours a day, nine months is about right.
If you are running your lights 12 hours a day, it may be more like five or six months.
The duration of your photoperiod will determine the functional lifespan of your lights.
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Old 10-02-2006, 11:50 AM   #4
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I run mine 12 hrs a day and change every 6 months. I have VHO lights. And yes lights gone past their limit will cause algea growth.
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Old 10-02-2006, 01:17 PM   #5
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I run mine 8-10 hours a day, change every 9-10 months.

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bulb, bulbs, change

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