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Thread: reflector size?

  1. #1
    Join Date
    Aug 2009
    Posts
    18

    Default reflector size?

    Hi, What reflector do you recommend for a 400 watt horizontal HPS set up? Planning on using a lumatek ballast. It looks like a 400 watt bulb only goes about halfway across the cool sun six inch. Does this make a difference? Thanks

  2. #2
    Join Date
    Dec 2009
    Location
    BGH Bell, CA
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    26

    Default

    The length of the bulb isn't a factor in determining the spread of light coming from the reflector. The reflector itself will determine the spread of light. How large is your growing area? length-width-heigth?

  3. #3
    Join Date
    Aug 2009
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    18

    Default

    Hi, ok, I got a 2'x4'x7" grow tray, 8' of height, the room is 7'x10. Planning on splitting it up to veg and flower. I have done really well with fluoresents (T12's) grew healthy red and white basil, and tomatoes. Considering a step up with better sunlight. Something small though, 400 watter. Thanks, Micro

  4. #4
    Join Date
    Oct 2006
    Location
    Vancouver, WA
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    40

    Default

    2x4' is fine for a 400w, if you plan to air cool the reflector you may want to look into either the yield master, cool sun, or super sun 2. If you don't plan to air cool have a look at the Super Sun. But either way it should provide you with much better results than your t12.

  5. #5
    Join Date
    Aug 2009
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    18

    Default

    Thanks, Thats what I needed!

  6. #6
    Join Date
    Oct 2008
    Location
    Los Angeles
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    39

    Default

    A reflector should be used in most every lighting scenario, except when using vertical lighting. Even in some vertical lighting applications an open (non reflective) "cool tube" type reflector can be used to draw heat away from the surrounding plants, but these garden designs are uncommon.

    Most of the applications that call for a reflector are not vertical but, hortizontal. In this case the bulb is not exposed to plants on all sides, but are rather exposed only direclty beneath. This is when a reflector plays a major role in gardening, as the quality and design of this reflector will determine how much light is reflected back down to the plants.

  7. #7
    Join Date
    Oct 2008
    Location
    Los Angeles
    Posts
    39

    Default

    All of the reflectors that are being discussed in this thread are used to maximize the light directed from a light bulb, to the garden. What gardeners aim to do is mimic the sun as well as possible. Any light that is reclaimed from your garden's light source will aid in the goal of increasing the light reaching your plants.

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