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Originally Posted by Delphinus
The advantage to using an electronic ballast is that the ballast won't give off heat. Thus, there is a slight improvement in efficiency...
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well they do give off heat but noticably less than a tar ballast.
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Originally Posted by Delphinus
That said, I have to view the claim that the reason the bulbs last longer with a little bit of skepticism. Personally, I feel they're probably acheiving this by slightly under-driving the bulbs..
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your right and tests have showed they under drive the bulb by as much as 40%. so if you are concerned about power usage (would take 5 years to pay its self off with energy savings on my power cost) whould it not make more sence to drop down to a 250 watt bulb which is plenty of light for a 24" tank instead of underdriving your 400 watt bulb to a light output that is actulay less than the 250 watt set up?
Steve
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