Dimming 1000w DE bulb

Discussion in 'Grow Room Design & Setup' started by mackdx, Feb 28, 2018.

  1.  
    mackdx

    mackdx Well-Known Member

    I'm going to be gifted a few Phantom 1000W DE ballasts. With only 8ft ceilings to work with, I suspect running them at 1000w would be far too much.

    Conventional wisdom says that dimming SE HPS bulbs negatively impacts spectrum.

    Would I encounter similar issues with dimming a 1000w DE bulb to 750w?
     
  2.  
    Moldy

    Moldy Well-Known Member

    I wish I knew too. Hopefully someone will chime in. I have the same issue using 875 W setting on my DE ballast / 1000W bulb.
     
  3.  
    dongle69

    dongle69 Well-Known Member

    Yes.
     
  4.  
    Moldy

    Moldy Well-Known Member

  5.  
    Fractured but whole

    Fractured but whole Well-Known Member

    I've been running my de's at 1000 with 8 ft ceilings for a couple years now. i have no issues.
     
  6.  
    mackdx

    mackdx Well-Known Member

    What clearance do you run?
     
  7.  
    Fractured but whole

    Fractured but whole Well-Known Member

  8.  
    kingtitan

    kingtitan Well-Known Member

    DE don't suffer the same as SE on dimmer but to run it long term is still messing with spectrum. This is from the Gavita website info on the 6/750
     
    Moldy likes this.

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