The Planted Tank Forum - View Single Post - T12/T8 interchangable
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Old 01-20-2013, 02:04 AM   #4
Hoppy
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The original T8 bulbs were substituted directly for T12 bulbs, for power savings. I used to use a DIY light with T8 bulbs and a magnetic ballast, and it worked fine, except when the temperature dropped below about 65F, as I recall, then the bulbs wouldn't light. At normal 70F+ room temperature, it worked fine, discounting the flicker and hum.
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