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Fluorescent lights

This is a discussion on Fluorescent lights within the Semi Hydro / Lights / Greenhouses / Accessories forums, part of the Orchid Culture category; They say you also should replace the bulbs after 6 months as they start to ...

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  1. #11
    sterling is offline Junior Member
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    They say you also should replace the bulbs after 6 months as they start to lose intensity then.



    Sterling

  2. #12
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    Quote Originally Posted by Persistence
    Hmmmm. I am hinking....Why 40 w bulbs? How much money do you have to spend? Are you getting cheap fixtures? Some of the best lights are those T-11 flourescent lights. they are much smaller and use less energy with a higher output of light. You can adjust levels each shelf gets by adjusting how much time the light is on. personally I would never get 40w fixtures or bulbs again with all the Compact Flourescent and newly designed flourescent light out there.
    Hi Mike. I don't have to get 30 or 40w bulbs if there's something else you would suggest. What other fluorescent lights would you recommend? I don't really have a set budget...I'm open to anything right now. I was originally considering HID, but I'm growing the plants in my guest room/office, so HID wouldn't really be feasible. That's the main reason I thought of getting fluorescent lights.

  3. #13
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    Well, I do not use them but try to keep up with the newer technology. I know a fe people that have them and are very happy. here is a site that describes them but you might find them much cheaper on the net elsewhere or I would personally call a local lighting shop and get them there. Many hydroponics storeas also carry this type of lighting. i think there are several types from T-5 to T12.
    http://homeharvest.com/teklighthigho...uorescents.htm

  4. #14
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    Quote Originally Posted by Persistence
    Well, I do not use them but try to keep up with the newer technology. I know a fe people that have them and are very happy. here is a site that describes them but you might find them much cheaper on the net elsewhere or I would personally call a local lighting shop and get them there. Many hydroponics storeas also carry this type of lighting. i think there are several types from T-5 to T12.
    Thanks Mike. The fixtures for these lights are definitely more expensive but I'll look into it some more. I appreciate the suggestions!

  5. #15
    Aerides is offline Senior Member
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    One thing you might consider is the fact that fluorescents are brightest in the center and fall off in brightness towards each end.

    Soooo, if you got 48" lights for your 36" shelf, you could put plants all the way to the ends of the shelf/tray and still insure that the plants at the ends are getting good light (because of the light overhang). You also might have leaves that extend beyond the length of the shelf, even though the plant is sitting on the shelf. If you got the longer light, those leaves would get the benefit of the bulb extending beyond.

    Personally, I'd get the longer bulb, no question.

    FWIW,

    John

  6. #16
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    Quote Originally Posted by Aerides
    One thing you might consider is the fact that fluorescents are brightest in the center and fall off in brightness towards each end.

    Soooo, if you got 48" lights for your 36" shelf, you could put plants all the way to the ends of the shelf/tray and still insure that the plants at the ends are getting good light (because of the light overhang). You also might have leaves that extend beyond the length of the shelf, even though the plant is sitting on the shelf. If you got the longer light, those leaves would get the benefit of the bulb extending beyond.

    Personally, I'd get the longer bulb, no question.

    FWIW,

    John
    Hi John,

    Hmmm, your point makes a lot of sense to me. Also, I was looking at an older thread from Momokev and she has her lights dangling off the shelves. Lisa's set-up So I won't rule out 48 inch bulbs.

    John, do you use fluorescents? If so, what would you recommend? Thanks!

  7. #17
    Aerides is offline Senior Member
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    Nancy, I grew under fluorescents a long time ago when the choices were warm white, cool white, purple "grow" fluorescents and "wide spectrum" fluorescents. I chose the wide spectrum and they did fine for me. I think there are more choices nowadays - i.e., bulbs that claim to put out more lumens than others.

    You might be interested in browsing this website: www.indoorgardensupplies.com.

    John

  8. #18
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    Quick question...is full spectrum the same as wide spectrum? Thanks!

  9. #19
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    almost assuredly. there are the old ones that look purplish, and the new ones that are better balanced to look white. both are equally good for plants i think--the white is more for the humans. double-check the label to make sure it's meant for plant growth.

  10. #20
    edcramer is offline Member
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    Default Fluorescent Lights

    Hi, I have been using these lights for many years. For paphs and phals the 36" lights would be fine. I would choose the longer lights 48" if you ever plan to grow higher light demanding plants. For paphs and phals a combination of one cool white to one wide spectrum grow light would be fine or even one deluxe cool white to one deluxe warm white might do. For higher light demanding plants I use 4 full specturm lights. Good Luck, Ed

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