400w in 600w ballast

Discussion in 'First Time Marijuana Growers' started by MO_, Aug 16, 2009.

  1. Just wondering if a 400W MH can be used in a 600W digital ballast. I'm going to assume the answer is no, but would be nice if it could.. would make vegging easier.
     
  2. NO. It will probably explode. You can use a 600W MH conversion bulb with a digital ballast, but you're probably better off using the 600W HPS, since the conversion bulb only emits about 430W of light and you still pay for 600W.
     
  3. Yeah that's what I thought. Good (and not so good) to know about the conversion bulb being woefully inefficient.

    Wait... wouldn't an inefficient MH bulb be pretty much exactly what I'm looking for anyway? Aside from the power consumption... The only reason I want a lower wattage bulb is because I thought the 600W was way overkill to start the plants off. Setting up fluoros is a bloody pain in the ass, but I might just end up doing that anyway I think.
     
  4. i would say do it ..get back with results:eek:
     

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