Originally posted by Miniatus
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I read an article a few years back,and it stated that 90% of coral reef are on or near the equator, heres the kicker there is no true sunrise or sunset on the equator. Basically the sun is there and then its gone. So then low light in the morning building up to full sun then slowly sinking at night is a bunch of bunk. I wish I could find that article,it saved me a few bucks when I was going to buy a dimmer , anyway My coral don't go bonkers when they get full lights in a matter of a few seconds. JMHO.
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I believe that especially Halides coming on all of a sudden can startle fish. When I received fish thru the mail It was always mentioned in the directions that come with the packaging to turn off lights otherwise it would shock the fish so I think there's some merit to at least have some sort of weaker light come on to help the fish acclimate JMHO