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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.
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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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