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post #19 of (permalink) Old 01-17-2013, 01:02 AM
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Join Date: Jun 2008
Location: Seattle, WA
Posts: 3,103
Originally Posted by thesawguy View Post
I can understand the lure of a split cycle for viewing purposes for a working individual but one thing to consider is that turning fluorescent lights on and off twice as often will shorten their useful life, wearing them out faster.
+1 on thesawguy's comment; split periods do shorten the life expectancy of fluorescent tubes. Because I have found the output of my bulbs typically drops by 25% or more over a 12 month period (verified with PAR meter readings) I change my bulbs annually and seldom have a bulb fail prior to replacement.

45 Gallon Tall; 96 Watt AH Supply CF; 6700K; & 30 Gallon Long; 2X36 Watt AH Supply CF; Press. CO2; UGF; Heat Treated Montmorillonite Clay
Greater Seattle Aquarium Society (GSAS)

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