250w HPS or 400w

Discussion in 'First Time Marijuana Growers' started by Brucemalis, Sep 20, 2010.

  1. #1 Brucemalis, Sep 20, 2010
    I was trying to find out if the amount of heat a 400w hps produces is a significant amount more compared to the 250w HPS.
     
  2. #2 Marty Mcfly, Sep 20, 2010
  3. #3 Brucemalis, Sep 20, 2010
    I'm just wanting to know if a 400w HPS runs alot hotter than a 250w or if the temps are basically the same.

    I'm going to be buying a growtent soon

    High Tech Garden Supply


    that one more than likely. And I wasn't sure if throwing a 400w HPS would be too much for it.(originally just planned to use a 250w cause the Complete Grow Kit with tent comes with a 250...but i saw a 400 is only a few bucks more so why not get the extra light...the more light the better.)

    Thanks for the help Marty...i'll be checking out your journal to see your grow space details/setup
     
  4. #4 Marty Mcfly, Sep 20, 2010
    I think with enough ventilation that tent with a 400w light would do wonderfully. The price you mentioned includes the bulb, ballast, and hood? I don't see many people growing with 250w.

    If you are trying to save some money try to get it from Craigslist. I got my light for free, but I would never pay full price for one when there are so many being sold by local growers that upgrade.
     
  5. #5 Smokemota, Sep 20, 2010
    I just switched from a 250w to 400 w my closet temp with 250w was about 81 with a 400w it's now 83.
     
  6. #6 Kaerus, Sep 20, 2010
    400 should b good
     
  7. #7 Brucemalis, Sep 20, 2010
    I wonder what kind of ventilation will be needed 4 that tent
     
  8. #8 Marty Mcfly, Sep 20, 2010
  9. #9 Brucemalis, Sep 21, 2010
    Thanks for all the help I really appreciate it.
    ...
    I would +Rep you guys but I can't seem to figure out how using tapatalk
     
  10. #10 toastybiz, Sep 21, 2010
    I think the answer is...it depends. Sometimes you could put a 400w in place of a 250w and see very little impact on temps, but sometimes you could see a 20F difference. It's condition-specific, which means that ultimately only you can figure it out in your setup with some trial-and-error. Air-cooling the 400w is a good way to keep yourself from getting stuck with a too-hot lamp.
     
  11. #11 yoctown, Sep 21, 2010
    600w. If you decide you are going to get a 400w u my as well just get the 600w its more efficient and better bud density
     
  12. #12 Brucemalis, Sep 21, 2010
    I see what you mean. I'm gonna use that 400 and cfls so I'm probably gonna need some good vents
     

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