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Thread: Enough light?

  1. #1

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    Default Enough light?

    A freind of mine just set up his new alien equiptment. Are 2 600w lights going to be enough for 8 pots. I say no but told him id get a 2nd oppinion.he dosent want to run any more then 2 lights. Any sugestions on difrent reflectors if the ones hes using will be no good

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  3. #2

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    1,200w over 8 plants is fine
    It's Not What You Know, It's What You Can Prove...”

    (Alonzo Harris)


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  5. #3

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    I do mine in a tent and i know 1 600 light is ok for 4 plants but just thought cus his is alot more open area he might struggle.

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  7. #4

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    With 600w hps, 37.5 watts per square foot is about as low as you want to go. As that's a big tent, it will be lower than 37.5w psf. Aw well, what's done is done. Have the lights shine on the plants as much as possible and try to ignore the illuminated edges of the tent. ime with 37.5w hps psf, an average strength strain can give stronger bud than a heavy hitter strain.

    For 600w hps, I'm a fan of 1 metre wide parabolic reflectors. They do steal some height but give a fairly even spread. In theory, there is light lost because it all has to bounce off the reflector. In practice, you can have them lower because infra red doesn't bounce. With mine, canopy temps were rarely more than 3'C above room temp.

    btw, that ducting looks wrong.

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  9. #5

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    Get vertical bulb parabolics, sunking does large ones. 1200 watts is enough, though I would move the plants further towards the back wall so you will get reflected light off one wall at least
    When you do things right, people wont be sure you've done anything at all.

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  11. #6

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    Quote Originally Posted by Farmer Geddon View Post
    With 600w hps, 37.5 watts per square foot is about as low as you want to go. As that's a big tent, it will be lower than 37.5w psf. Aw well, what's done is done. Have the lights shine on the plants as much as possible and try to ignore the illuminated edges of the tent. ime with 37.5w hps psf, an average strength strain can give stronger bud than a heavy hitter strain.

    For 600w hps, I'm a fan of 1 metre wide parabolic reflectors. They do steal some height but give a fairly even spread. In theory, there is light lost because it all has to bounce off the reflector. In practice, you can have them lower because infra red doesn't bounce. With mine, canopy temps were rarely more than 3'C above room temp.

    btw, that ducting looks wrong.
    this pretty much 50w per sq foot we want it will do the job but get airhoods and drop em onto even canopy for max ‘value’ or get another 600 in and live a little, no point going balls out on a system n then scrimping on the sunshine best of luck man


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