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120 Gallon Tank LED light questions

Discussion in 'General Discussion' started by Cipher43, Apr 28, 2011.

  1. Apr 28, 2011 #1
    Cipher43

    Cipher43

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    Ok so I just got a 120 gal tank (4'X2'X2') and am wanting to build an LED light for it.  How many lights will i need for that size of a tank and which drivers would be best that are dimmable if needed.  Also i have been told that an almost ideal ratio of lights would be 2:1 blues to whites,  is that true.  Any other tips or tricks to make this would be nice to hear.Thanks
     
  2. Apr 28, 2011 #2
    JB Marion

    JB Veteran Reefkeeper

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    I just got done with an LED fixture for my frag tank and I'm currently in the process of building 3 more fixtures for my 125 display tank.   Here's a link to the build thread:
    http://www.greateriowareefsociety.org/Community/DiscussionForums/tabid/78/aft/22939/Default.aspx
    How is the top of your tank braced?   That's going to be one of the factors that drive the number/configuration of your fixtures...
    I'm guessing that you're going to need 2 48 LED fixtures.
    -JB
     
    Last edited by a moderator: Apr 26, 2015
  3. Apr 28, 2011 #3
    Cipher43

    Cipher43

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    it is an all glass and has a brace in the middle of it.
     
  4. Apr 28, 2011 #4
    JB Marion

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    That's what I figured. My guess is that you're going to want the 2 48's...
     
  5. Apr 29, 2011 #5
    Cipher43

    Cipher43

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    Has anyone been able to make a good heatsink that doesnt need a bunch of cooling fans or is it best to get a heatsinkusa one



    What about a return pump for that tank. Right now on my 30 gal i have a rio 2100 which is supposed to push 695 GPH. Is that gonna be way to low or will it get me close to the 5x turnover. If not what pump should i get.
     
  6. Apr 29, 2011 #6
    JB Marion

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    Assuming you have 2 overflows, I'd run one of those on each return.
     
  7. Apr 29, 2011 #7
    Cipher43

    Cipher43

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    OK thanks.
     

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