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Old 01-16-2012, 08:42 AM   #1
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Lights on and off (reef)

So I am curious, I have started a reef aquarium and realized I'm afraid to turn off the lights because of the sensitivities of anenome's and corals. So my question is how many hours a day should I leave the lights on? I have 2 t5's one is 10,000k, other is uv, it is also all in my profile. Do I turn one off at night leave the blacklight on at night, both off, all on all the time? I mean really whats the rules?
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Old 01-16-2012, 09:51 AM   #2
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What kind of anemone do you have? I know I have my rbta under a 150w mh and my maxi minis I have those under 4 t5 bulbs.
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Old 01-16-2012, 09:55 AM   #3
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A Long Tenticle, purple tip for the anenome's, and a leather toadstool for coral
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Old 01-16-2012, 09:59 AM   #4
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Photoperiods vary from 8hrs to 12hrs, somestime even more or less than that. The photoperiod of my reef tank spans from 12:45pm-10:45pm.

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Originally Posted by eugeneevans View Post
I have 2 t5's one is 10,000k, other is uv...Do I turn one off at night leave the blacklight on at night, both off, all on all the time? I mean really whats the rules?
The "uv" T5/"blacklight" that you're referring to is the 420nm actinic bulb listed in your profile. There should be time (~12hrs, give or take) when all of your tank lights are off (the exception being optional moonlights); so both of your lights should be off at night.
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Old 01-16-2012, 10:10 AM   #5
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So photoperiod is the time that the lights are on? Also seems when the lights are off the anenome's look strange or almost sickly is that normal? You say off around 12 hours that seems like a lot to me. Is that normally how long to leave all the lights off on a day to day basis?
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Old 01-16-2012, 10:13 AM   #6
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Yes photoperiod=the time that the tank illumination is on.

There is no 24hr sunlight over reefs in the wild. My reef's tank lights are off from 10:45pm to 12:45pm (14hrs of darkness daily).
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Old 01-16-2012, 10:16 AM   #7
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I run my reef lights as follows: blues on at 9 am whites on at 10 am. Whites go off at 8pm and the blues then go off at 9pm.

I would start with maybe a 12/12 hour split and go up or down from there, that's what i did to get to where i am now.
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Old 01-16-2012, 10:20 AM   #8
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Awesome, thanks both of you.
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Old 01-16-2012, 11:33 AM   #9
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You might need to look into better lights for your anemones. Running lights longer isn't going to do much for their health they need strong light 1 t5 10k and an actinic bulb isn't enough to support an anemone for long.
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Old 01-16-2012, 12:18 PM   #10
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I agree. You need a lot more light if you want to keep anemones long term in a 110. 3 times that amount (6 t5 HO lamps). What are the exact dimensions of your tank? Is this a 5' 110?
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