4x4 or 5x5 - 2 400w or 1 600w??

Discussion in 'Growing Marijuana Indoors' started by whiteb0inewb, Mar 21, 2012.

  1. I am buying a 4x4 or 5x5 grow tent in the next few days. I already have a DR80 with a 400 watt cooltube in there.

    I also want to upgrade the light. I was originally thinking a 1000w hps cooltube growing 6-8 plants. But heat might be a major factor. Now Im thinking adding a second 400 watt hps cooltube and connecting them via ducting and just scrogging.

    would 1 600 or 2 400 be more efficient in a 5x5 with 6-8 plants?

    Want to get the ball rolling :smoke:
  2. forgot to mention I have a 440 cfm inline fan as well i use with my cool tube
  3. As long as u have a good air in take all the time and air out take, I would put 2 600w to 6-8 plants! I put no more than 4 plants to every 600w hps and get 6 oz a plant dry when growing 12 plants in a 1m by 2m tent with 3 600w (nooo cool tube) don't need them as long as u have good air in and out!
  4. I like the 2 400watt. I'm betting you would get pretty good results with 3 plants to each 400, plus you have the versatility to raise and lower each light as needed. I have also started reading about some mixed spectrum flowering and vegging (1-400w HPS, and 1-400w MH) don't know to much about that yet, but again versatility.
  5. I would love to go 2 600w but I'm concerned about a spike in the electric bill. I already have 1 400w so I was thinking of just getting a 600 w and using it along with my 400 w.

    It's a tough call. I'm definitly getting the 4x4 today, I have the 440cfm fan and controller, I have a 400w hps. So it's either upgrade to a 1000w or use a 600w along with the 400w.

    I'm havin a tough time deciding. I want to so a 6-9 plant scrog on my next go in a month.

    I hate making this decision, I find my self thinking about it all day lol

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