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Thread: How close can I get with a cool tube and 250w mh bulb

  1. #1

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    Default How close can I get with a cool tube and 250w mh bulb

    My seedling is now rocketing skyward, but im unsure how close a cool tube can be? Its designed to remove heat so im guessing it can be closer than 12 inches? Anybody have experience with cool tubes and distance?

  2. #2

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    Use the back of your hand above the seedling.

    Lower the light till your hand is just nice and warm,if your hand is burning the light is too low.

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    Bud-e (03-12-16)

  4. #3

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    Ok thanks alot

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    Bethmeg (03-12-16)

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    As beth said. I can put my plants up against my cool hood but then again it is very overkill

    check out my diary

    https://www.thctalk.com/cannabis-foru...d.php?t=150124

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    Bethmeg (03-12-16)

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