How long is too long to run your lights on your saltwater reef aquarium?

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How long is too long to run your aqaurium lights?

  • More than 6 hours

    Votes: 7 0.8%
  • More than 7 hours

    Votes: 22 2.6%
  • More than 8 hours

    Votes: 64 7.6%
  • More than 9 hours

    Votes: 75 9.0%
  • More than 10 hours

    Votes: 183 21.9%
  • More than 11 hours

    Votes: 97 11.6%
  • 12+ Hours

    Votes: 364 43.5%
  • Other (please explain)

    Votes: 25 3.0%

  • Total voters
    837

LPS Bum

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9 hours total, including a 1 hour ramp up and a 1 hour ramp down. Full power for 6 of those hours, but my mixed reef is mostly LPS and softies.
 

Explorer12

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I try to mimic the sun so it's longer hours in the summer and shorter in the winter. Today it's start ramp up around 6:30 and ramp down by 8ish.
 

Popkorn0407

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I am doing at average what coral receve in real reef like in hawaii, around 8 and 9 hours full sun and 12h total daylight. So my radion run 12h and my t5 8h.
 

bdare

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nature sez

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This! FTW
 

iramack

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I am doing at average what coral receve in real reef like in hawaii, around 8 and 9 hours full sun and 12h total daylight. So my radion run 12h and my t5 8h.
9 to 9 on my two Kessil A360X's over my 3 foot tank. 2.5 hour ramp up to a whopping 20/20 setting and 3.5 ramp down to zero with violet 40 and red 5 added for color. So six hours at 20/20. My LPS and Zoas are loving it. If I try to go higher, they complain. Them Kessils are mighty lights!
 

Appoloreefer

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Some of y'all have grumpy fish because they never get enough down time and the others have too much energy because they don't get enough day light! HA! When it comes to lighting your reef tank what is a good balance of time, on and off, for the fish and the coral? Let's talk about it!

1. How long do you run your lights on your reef tank?

2. How long do you think is too long for the lights to be on?


image via goldy.singh.aquagold and Orphek
OR3_LED_Bars_reef_tank.jpg
I do an hour ramp up then lights are on for 10 hours and then an hour ramp down so a total of 12 hours
 

Justin_Casper

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I think more important than amount of time is the DLI. If can run 100% intensity for 8 hours or 50% intensity for 16 and the coral are getting the same amount of light. There’s probably a whole equation, I just don’t know it. At the equator days are roughly always 12 hrs, but other places they fluctuate more.

I guess Im getting at, I don’t think there’s a magic number that’s “too long”. I’ve heard of people with huge setups that stagger their lights so some lights are on 24 hrs a day to balance out the photosynthesis going on.
 

ClownSchool

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Not sure what the par is for a Biocube 16 (3 months old)...
But, 30 minute ramp on both ends, starting @ 7am and ending @ 8pm. So, 13 hours, with 12 hours @ full daytime light.
 

ClownSchool

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I think more important than amount of time is the DLI. If can run 100% intensity for 8 hours or 50% intensity for 16 and the coral are getting the same amount of light. There’s probably a whole equation, I just don’t know it. At the equator days are roughly always 12 hrs, but other places they fluctuate more.

I guess Im getting at, I don’t think there’s a magic number that’s “too long”. I’ve heard of people with huge setups that stagger their lights so some lights are on 24 hrs a day to balance out the photosynthesis going on.
The ‘coralatic’ equation...not to be confused with the quadratic equation.
 

guylovell

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Being that I am new to this, what would make sense is to start from sunrise to sunset with an increase in intensity as you approach noon time then decrease intensity till sunset. Am I on the right path?
 

tigre44

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Some of y'all have grumpy fish because they never get enough down time and the others have too much energy because they don't get enough day light! HA! When it comes to lighting your reef tank what is a good balance of time, on and off, for the fish and the coral? Let's talk about it!

1. How long do you run your lights on your reef tank?

I run MH from 9-5
T-5 from 8-8

LED moon lights 8:30 PM to midnight

2. How long do you think is too long for the lights to be on?
Not sure
 
BRS

Have you ever had aquarium equipment damaged by livestock?

  • YES (tell us in the thread)

    Votes: 18 18.9%
  • NO

    Votes: 71 74.7%
  • Maybe now that you mention it

    Votes: 4 4.2%
  • Other (please explain)

    Votes: 2 2.1%
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