Thread: fluorescent grow lights
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Old November 21, 2008   #9
akgardengirl
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Location: Anchorage, AK zone 3/4
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Mine are the 1 1/2", 40 watt bulbs. How does one know if they have electronic ballasts? The fixtures are 5-6 years old. Sounds like a good cleaning will brighten them some. Thanks for the graph.
Sue
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