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post #19 of (permalink) Old 01-17-2013, 12:02 AM
Seattle_Aquarist
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Join Date: Jun 2008
Location: Seattle, WA
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Quote:
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.

Roy
75 Gallon, 2X55W AH Supply CF 8800K, 1XMarineland Doublebright, 2X Marineland 350 Magnum; 45 Gallon Tall, 96Watt AH Supply CF 6700K; 30 Gallon Long; 2X36W AH Supply CF 6700K; 20 Gallon, 1X26W AH Supply LED kit; all with Press. CO2; (Calcined) Montmorillonite Clay
Greater Seattle Aquarium Society (GSAS)

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