Is upgrading from 400-->1000Watts too much?

Discussion in 'Grow Room Design/Setup' started by frank cattin, May 10, 2010.

  1. Grow area is 28"x 19"=3.69ft^2

    I have a 400 Watt MH sitting about 3 feet from the canopy. I also have an AC unit which can bring the temps all the way down to 64F in the daytime if needed. If I can keep temps this low with a 400W, can I swap out for a 1000W dual arc to dramatically increase the yield?

    I'm hearing that 15,000 lumens per square foot is the limit, but is that true if I can keep the temps in check(I plan for about 77F)?

    A 100,000 lumen dual arc bulb will create 27000 lumens/ft^2. Will bleaching happen even if the temps are ok?

    I know this is a ridiculously small grow area for such a large bulb, but I'm looking for the densest nugs in existance, and this seems like the way to do it.
  2. way too much for that space the 400w should be fine.
  3. 28 x 20

    3.8 ft^2 = 65W / Sqft with a 250 or 105W/ft^2 with a 400. A 250W would suffice a 400W is on the verge of max light you want. You don't need anymore light 400 is spot on for that size.
  4. I fault it was 10,000 Lumens per square foot?

    1000w is not needed the perfect is 600w keep it 4 foot above plants in 4 foot square 25-30 plants i think?

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