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Thread: Energy saving compact flrocent bulbs

  1. #9

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    Nicholas_Bostaph,

    I hope my post didn't come across as rude or anything (Sorry if so) [img]http://www.**********.com/iB_html/non-cgi/emoticons/confused.gif[/img]. You are right that the 4000k bulb is far more suitable than a 2700k.

    Your post made me worried, as I recently put a 2700k, 25watt CFL over my traps (In the window sill), and thought perhaps the light frequency would be detremental to plant growth .

    (Kinda like the way an incandesant bulb's light produces to much infra red)

    Thats why I tried to find some other info out. However, I will replace the 2700k bulb (one I had lying around) with a 4000k bulb (next time I'm shopping), because of your advice! [img]http://www.**********.com/iB_html/non-cgi/emoticons/biggrin.gif[/img]

    Cheers [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img] ,

    Jacko

  2. #10
    Frakkin Toaster Cynic81's Avatar
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    I'm using a 28 watt, 1750 lumen bulb to grow most of my collection (1 purpurea, 2 leucos and 3 VFTs), and they all seem happy and colorful. The VFT traps have a nice pink color, and even the leucos are turning red. Also, if you're growing plants under a light in a terrarium, I've heards it help to wrap at least three sides of it (leave one side open for viewing [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img] ) with tinfoil. The foil will reflect light back onto your plants that would otherwise be lost. This is what I've done, and the plants seem happy.
    The Best Part About Being a Sociopath is Never Having to Say You're Sorry.

  3. #11

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    Jacko,

    No, you didn't sound rude; sorry if I did, I'm posting at work. [img]http://www.**********.com/iB_html/non-cgi/emoticons/tounge.gif[/img]


    I actually started my terrarium with that same bulb you listed...almost. Mine was a 23 watt 2700K CFL. That's when my plants started looking a little 'tired' [img]http://www.**********.com/iB_html/non-cgi/emoticons/sad.gif[/img]. Since then I've switched to a 27 watt 6500K CFL to supplement their few hours of sunlight and they're all looking great...especially my D Intermedia: 6 flower stalks and still dewy and healthy as ever! Can't wait to see how much seed I end up with [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img]. So that's why I mentioned using a higher wavelength...I just didn't want you to go through weakening plants like I did.


    Anyway, best of luck with everything. Make sure you keep us updated on how the little guys are doing. Speaking of which, what are you growing anyway?

  4. #12

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    I get you! I didn't realise the energy saving bulbs were just the same as fluroescent lights. I found this page on lumens: here, what would be the best?
    Alexis Vallance, U.K.
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  5. #13

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    Alvin,

    That PDF isn't the easiest thing to read, and its in a different format to the one I've got, anyhow...

    I think that if you are just going to the the bulb for lighting, like in a terranium, then you'd need one with a light temp around 4000 Kelvin.

    4K - 4000 Kelvin: Neutral Metal Halide
    Best single source for plant growth, producing shorter, bushier
    growth than 3700 Kelvin and color rendition. Used in general
    plant lighting.


    A selection of bulb codes from the PDF, on page 2 :

    Green Section : 20-640 Cool White (4000k)
    Yellow Section : 840 Cool White (4000k)
    Orange Section : 940 Cool White (3800k)

    if its going to be used as with daylight, then I guess? something around the 6000 to 6500 Kelvin mark (classed as 'Daylight' ). But I'm not sure whether this would be better than a 4000k bulb...

    Does anyone else? [img]http://www.**********.com/iB_html/non-cgi/emoticons/confused.gif[/img]

    "5K - 7K Kelvin: Strong Blue Light
    Promotes bushy growth. Ideal for rapid growth phase of plants.
    Greatly enhances all-around plant growth when used with super
    high output, high pressure sodium or 3K warm metal halide lamps."


    A selection of bulb codes from the PDF, on page 2 :
    Green Section: 10 -765 Daylight (6500k)
    Yellow Section: 860 Daylight (6500k)
    Orange Section: 965 Daylight (6500k)

    Does this sound ok?

    Nicholas_Bostaph,

    I've got 2 vft's, and 2 Sarrencia's. Had them for around 15 months (probably more, I can only guess). And yourself, any pictures handy?

    http://hometown.aol.co.uk/Bilfsonn/m...s/DCP_0003.JPG

    http://hometown.aol.co.uk/Bilfsonn/m...s/DCP_0007.JPG

    http://hometown.aol.co.uk/Bilfsonn/morepics/CP_0006.JPG

    This last one is of the traps under a CFL

    http://hometown.aol.co.uk/Bilfsonn/m...s/CP_0016+.JPG

    Jacko

  6. #14

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    Thanks for that. I've got some sarracenia seedlings that I'm going to overwinter on a windowsill, so they'll be getting some weak sunlight. Last year I germinated them under two incandescent blue daylight bulbs and they did great. For this year, they are much bigger though and was thinking of one daylight incandescent (which gives off a lot of heat which is useful in December/January) and one CFL.
    I've found a 30watt CFL (equiv to 150w incandescent) but it tells me nothing about colour temperature. I assume one marked 'cool white' would be good. It's tough finding one that has a decent wattage though. We have one in the house which is equivalent to 60w, but it's a feeble weak light.
    Alexis Vallance, U.K.
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  7. #15

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    Jacko,

    I've got a Dente and Common VFT, and a flower covered D Intermedia [img]http://www.**********.com/iB_html/non-cgi/emoticons/smile.gif[/img]. Yeah, small collection for right now. Only been into this for about 3 months. I'm still living with my parents too so I've got 361 more days until I can start really building up that collection. [img]http://www.**********.com/iB_html/non-cgi/emoticons/wink.gif[/img]

    As for the color temperatures, I think the 4000 or the 6500 will work for you, as they both provide lots of light in the usable range for plants. Optimally, I would use both, maybe one of each. Flourescents only spike at certain points in the spectrum, so the two would compliment each other. Of course, that gets expensive and requires much more space.

    Alvin, Cool white refers to the 3500-4000K range if I remember correctly. Warm white will refer to 2000-2500K bulbs, and daylight usually is in the 6500K area. I would think a 30w cool white CFL would work perfect for your plants, especially if you can supplement it with some daylight now and again.

  8. #16
    blue_diamond2077
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    Last winter I had shop lights and CPF lights and my VFTS did great they turned a dark red at first .I had to take the cpf lights off in the summer 2 hot . I put the vfts in a window now .

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