Upgrading an HPS

Discussion in 'First Time Marijuana Growers' started by Chicago-toker, Jul 12, 2004.

  1. I recently had my first harvest from a 400w hps after growing with fluoros for 2 years. I am still stunned by the difference it made. Over 4 times the yield from 4 less plants. Unbelievable! My question is will the ballast I have for the 400w hps work with a 600w hps bulb?
  2. uh, usually if you look on the ballast itself, next to the threads, it will say what wattage it can handle. mine is only 150w... i think 600 is an upgrade though. i'll check at work (home dePOT) tonight...
  3. Nope... For a 600 watter you'll need a 600 watt ballast.
  4. hows it all.....woodys right.....i had the same thoughts and had to buy the hole lot again.......i use my 400 with a mh bulb for veg and use my 600 hps for flower....

    laters jay
  5. Thanks for the info. Just out of curiosity, can you use a lower wattage light (hps) in a ballast rated for 400w? (not that I want to, just wanting to learn as much as possible)
  6. i think you can.....shortans the life of the bulb though......
  7. try 2 1000 w hps , prepare to knock out a wall though

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