Metal Halide Problems...again! - Canreef Aquatics Bulletin Board

12-30-2008, 11:52 PM

GreenSpottedPuffer GreenSpottedPuffer is offline

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Most of the humming is gone now that I changed the bulb. Its a dual ballast box and if I just leave the new bulb on and turn off the old one, the humming goes away almost completely. So...the ballast is obviously working very hard to keep the old bulb burning.

Thanks for the help guys!

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