Which bulb is Hotter, MH or HPS

Discussion in 'Grow Room Design/Setup' started by gdonald2007, May 22, 2011.

  1. #1 gdonald2007, May 22, 2011
    Heat is getting to hot with the outdoor temp rising to mid 20s C.

    I got the bulb and the balast separated, with just the bulb in my closet temps are pushing 90F that's with a fan.

    If the HPS is a cooler bulb will it also work with the MH balast?
     
  2. #2 SmurfTacular, May 23, 2011
    A 600W HPS draws the same amount of energy as a 600W MH despite the different spectrum outputs. All the energy will eventually turn into heat, so a 600W HPS produces the same amount as heat as a 600W MH.
     
  3. #3 Jellyman, May 23, 2011
    A HPS will not work with a MH ballast. HPS's use a starter and MH's don't.
     
  4. #4 SmurfTacular, May 23, 2011
    But you can buy conversion bulb. So you can plug a MH bulb in a HPS ballast.
     
  5. #5 gdonald2007, May 23, 2011
    You were doin good until the "conversion bulb" and a HPS ballast.

    No problemo, I'm not about to go out and buy a HPS ballast, the MH was enough.

    I just saw a 400w HPS that's got a blue spectrum added, all it says is that you need a 400w ballast, doesn't say which kind.

    I also just read MH produce more thc, bonus, I just got a heat problem, so time to get out the chain saw.

    good forum, by the way.
     
  6. #6 BHD, Jun 4, 2011
    I have just switched to my 600w digilux mh to my 600w digilux hps and with out a doubt the hps is hotter.
     
  7. #7 Garden Ruler, Jun 4, 2011

    Digital ballast most likely
     

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