Metal halide height above tank

Discussion in 'Lighting, Filtration & Other Equipment' started by clancaster23, Mar 16, 2013.

  1. clancaster23


    Jan 16, 2011
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    Now that I have basically all the room I need to have a metal halide over the tank, what's the average height that most have over the tank without increasing the heat too much? It's a single 250 watt bulb with two pc actinics. Where I had it before it was only maybe four inches at the most above the tank and I had seen it get up to 84-85 on a average day and this is during the winter in PA. I don't mind it going to 82 or so so if I can get that in the middle of summer (AC room) without using a fan, I'd love it but if I might have to use one, I will.
    clancaster23, Mar 16, 2013
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  2. clancaster23

    BL1 ............. Moderator

    Feb 6, 2010
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    TN, USA
    I had a 2x 250w MH fixture above my 75g with the normal legs that came with the fixture. So, it was like maybe 4-6" above the water level and it never affected the water temp on my tank.
    BL1, Mar 16, 2013
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