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#6
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![]() there good untill you decide to change them. don't let store propaganda of 10 month changes push you into a sale. these same stores said change them ever 6 months 4 years ago, when people started noticing after 1 year they only lost 10% of the out put the stors looked silly so they all bumped it up to 8 to 12 month recomendation. I ran my AB's 18 months and there was only a 9% decrease in PAR output, but I concider AB's the cream of the cream in the bulb world.
Steve
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