Light Distance Question

Discussion in 'Metal Halide Aquarium Lighting' started by Grotto, Nov 12, 2011.

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  1. Grotto

    Grotto Spanish Shawl Nudibranch

    Joined:
    Jan 22, 2008
    Messages:
    77
    Hey all,

    I'm currently running 2-250w 14k M/H with 2-110w VHO Super Actinics over a 75gal. I was looking for an ideal distance to hang them from the top of the tank. Temperature is not a problem, as I've got a chiller running on the tank, and while estimates are welcome, I'm hoping to get a relatively finite distance that would be optimal for an sps tank.

    Also, any suggestions on a light schedule would be excellent, all are on timers, and currently are set to run the M/H 6 hours a day, and the Actinics 12 hours a day.

    Thanks so much!
     
    Grotto, Nov 12, 2011
    Grotto, Nov 12, 2011
    #1

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  2. steve wright

    steve wright Super Moderator

    Joined:
    Feb 17, 2009
    Messages:
    11,284
    Location:
    shenzhen Guangdong PRC
    Hi Grotto, what type of reflectors do you have over the MH lamps?

    My 250 watt 14 K Halides are in 20 inch square Lumenmax type reflectors and sit 12 inches off the water surface

    I currently run mine for 10 hours per day, with supplemental blue LED for 12 hours each day

    Steve
     
    steve wright, Nov 13, 2011
    steve wright, Nov 13, 2011
    #2
    1 person likes this.