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Thread: air cooled hps, tube or hood?

  1. #1

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    Default air cooled hps, tube or hood?

    hi guys

    im looking at running a 600watt hps for flowering
    currently running 2x mars sp250 in 1.5 x 1.5 x 1.8 loft tent and i can keep my temps pretty stable using 100mm intake and exhaust but looking for a little more oomph for later flowering stages.

    my question is what is the better of the fittings?
    aircooled hood or tube? (100-150mm) for 600 watt bulb

    cheers

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  3. #2

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    I led to believe that the curvature of the tube emits slightly less light than the flat glass of the hood


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  5. #3

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    Quote Originally Posted by BB View Post
    I led to believe that the curvature of the tube emits slightly less light than the flat glass of the hood


    Sent from my iPhone using Tapatalk
    thank you for that info
    i did think that the glass would hold back some of the light but i thought there shape would have effected the spread between the two rather than the shape effecting the light emitted.

    thank you for that

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  7. #4

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    I use cool tube with 600hps in loft space with great results.i am a loft grower so the tube can get right up to the top of the apex.


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  9. #5

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    Quote Originally Posted by BB View Post
    I led to believe that the curvature of the tube emits slightly less light than the flat glass of the hood


    Sent from my iPhone using Tapatalk
    In the greater scheme of things, the loss is negligible... but your physics can not be faulted
    It's Not What You Know, It's What You Can Prove

  10. The Following 3 Users Say Thank You to M_C For This Useful Post:

    BB (28-03-20), funkydawg (28-03-20), GEORGE (28-03-20)

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