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[APD] shop light problem

Hi ...

I use some shop lights for plants, and noticed that the fluorescent  
bulbs burn out frequently, like within a month or two. But the  
fixtures for my aquariums are very reliable -- the lights burn for  
more than a year.

Does this have to do with "preheat" vs. "rapid start"? From what I've  
read, most aquarium fixtures use a starter to heat the tube cathodes  
and provide high voltage to create the arc, whereas rapid start, used  
in shop lights, apply voltage directly. I'm no expert on the  
technical aspects of this, but are preheat fixtures better for long- 
lasting bulbs?


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