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Old 03-30-2013, 12:37 PM   #1
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Night light

If I don't have any fish in my tank, can I just leave the light on all the time so my coral are constantly photosynthesizing? Or do they need a night cycle too?
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Old 03-30-2013, 12:44 PM   #2
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They need a rest period.
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Old 03-30-2013, 02:29 PM   #3
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+1 Not only do the corals need a rest period, but there are many critters that only come out & feed in total darkness, so they need their time as well.
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Old 03-31-2013, 03:10 AM   #4
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So complete darkness?
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Old 03-31-2013, 11:56 AM   #5
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Yes....

My moonlights go off at 11:30pm, and the dawn/dusks don't come back on until 1:00pm, so mine goes 13.5hrs without light.
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Old 03-31-2013, 12:58 PM   #6
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I don't have a timer or any dawn/ dusk lighting. Is there any concern about going from no light to full light?
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Old 03-31-2013, 01:05 PM   #7
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No, you're fine without dawn/dusk or moonlights, but I would pick up a $10-$15 timer so your tank is on a regular light schedule.
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