How many lights do I need? Kessil's over 120 Gallon.

Discussion in 'General Equipment, Hardware, Filtration' started by Beepinheimer, May 15, 2019.

  1. Beepinheimer

    Beepinheimer Member

    Jan 4, 2017
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    The tank is a 120 (tall) 60x18x26 LxDxT.
    Unfortunately it has a blacked out center brace which complicates things.

    My current setup (at least in terms of lighting) is 4 black box lights and 2 ATI Blue Plus bulbs.

    My existing setup already grows Acropora, Miliporas, LPS, pretty much anything but I want better color and shimmer which is something the black boxes cannot do.

    I already have 3x Kessil A360WE Tuna Blue's in my possession.
    My question is do I really need a fourth light or can I get away with 2 or 3? If 3 then how do I orient the third lamp?

    Thanks everyone!

    TLDR Version: big tank with a center brace, 2 or 3 Kessils? Or do I absolutely need to purchase a fourth light.
    Last edited: May 15, 2019

  2. Crabs McJones

    Crabs McJones Millepora Maniac Staff Member Team R2R R2R Supporter R2R Excellence Award Partner Member 2019 R2R Secret Santa Reef Tank 365 Article Contributor Glitter Fairy Hospitality Award Build Thread Contributor

    Jul 24, 2017
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    Fond du Lac, Wisconsin
    Personally I'd do 4. Two on each side of the center brace properly spaced out.
    dwest likes this.
  3. Peace River

    Peace River Thrive Master R2R Supporter Hospitality Award

    Apr 29, 2014
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    Central Florida, USA
    +1 on 4

    2 may limit your coral options because of the depth of the tank;
    3 will be a challenge to provide even lighting;
    4 should provide strong, even coverage.
    For shimmer with Kessils make sure that you have some surface agitation. Good luck!
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