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PAR data from my tanks

Discussion in 'Lighting' started by Tom Barr, Aug 11, 2014.

  1. Tom Barr

    Tom Barr Founder
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    70 Gallon Buce tank:

    220 to 250 umol/m^2/sec over the surface
    120-130 umol mid level in the tank
    75-80 at the tops of the plants that make up the ground cover. Some shaded spots, 20-15 umols or so.

    120, this surprised me, I noticed nicer growth, but felt it was due to spread, and in a way, it is.
    I lower the light about 6" versus the old ATI, but the spread is more even so that's okay.
    Middle surface, : 305-325, about 280 at the ends.
    The tops of the ground cover: 120-135umol, this is higher than the ATI was, but 14" versus 7" height.
    VERY even over the sediment.

    I have an ATI on my 60 Reef. It's 350 at the surface, 200-150 mid level where the coral frags are.
    I'm likely going to get a Mr Aqua 24x18x18, new stand and an Ecotech Radion.
    So locals can buy a nice 60p, stand and ATI 4x24 in near new shape. Or just the light if interested.
     
  2. ltb420

    ltb420 Lifetime Members
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    Tom,
    Where you running the ATI at 100% power over the 120?
     
  3. Tom Barr

    Tom Barr Founder
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    No, there are no ATI's on the 120, they broke, so I now use a cheapo hydroponic 8x54T 26" wide fixture I got for 190$ locally.

    Same bulbs.
     
  4. Whiskey

    Whiskey Member

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    Awesome info! Do you know what the par data for the 180 is?

    thank you!
    Whiskey
     
  5. ltb420

    ltb420 Lifetime Members
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    Sorry I meant when the ATI was in use. I run a 4 bulb ATI 12" high over a 120p dimmed to 40% and get about 100 par # at the bottom.
     
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