Discussion in 'Growing Marijuana Indoors' started by freeboarder212, May 21, 2010.

  1. I just got four 400W bulbs for free. Im gonna grow soon. Would it be better to go with the four 400W or buy two 600W?
  2. I have been recently learning about lighting over the last couple of days. What type of bulb is it? If it's metal halide or sodium you will need a ballast. 1 400w HPS (high pressure sodium) will pump out around 45k lumens and MH is abit less, so depending on the size of your grow room 4x400w might be overkill as 1 400w sodium can do 5-10 plants (again depending on the size of your grow room). The HID's I've ordered are 1x 400w HPS and 4x 11w energy saving fluorescent for a closet grow, quite small width and depth dimensions, but maybe build a shelf half way up and get another HPS.

    I'm sure some experienced grower here will advise you better.

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