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Thread: Question about fluorescents

  1. #9
    Copper's Avatar
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    Explain Joe, I am interested.

    I use fluorescents until the burn out, but I am switching to the new cool whites. They are supposed to keep a strong output for a couple of years and last a couple of more. We shall see about that, but the output is fantastic.
    I am just like a Super Hero, but without the power or motivation.................and the funky suit.

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    Which ones are you talking about copper...are those the ones which come in spiral or short PL shapes and claim to have the power many times that of ordinary balloon shaped bulbs?

  3. #11
    Somewhat Unstable superimposedhope's Avatar
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    Well, Here it is.
    It's not my fault if you hurt yourself!

    1) Start with a twin 40wtt/48" light fixture.
    2) Open the shell of the fixture, clip all the wires. (If your wire map on ballast is faded you might want to right it down)
    3) Now you need an 18" fixture, the ones that use 15wtt, 20wtt,so on.
    4) Do the same as above with the 18" as well.
    5) Reconnect the ballast to the 18" fixture, remember that it has twin out puts, instead you need to double the outputs to each side.
    6) Make sure no wires are touching each other and that you use something to cover exposed wire.
    7) If any wires touch not only will it hurt if your apart of it but it will kill the ballast possibly.
    8) You just need a bulb that has the spectrum that you want.
    By my use I would say that If your bulb has 1 yr of use plants wise then you over drive it and it is 20wtt running on twin 40wtt ballast; That leaves you with 80wtts on a 20wtt bulb. Since 80 divided 20 = 4, We have quadrupled its output and therefore its life is cut down to 1/4 of its 20wtt life.

    1yr bulb = 3month bulb rotation on over drive X4

    Joe
    \"There is nothing here of interest to any nation, as a matter of fact there is nothing here but humans!\"

  4. #12

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    So that means quadrulpling the light output - lumens or whatever light is measured in for plants?

    So after that what do you do with the 40W fixture. Won't it be less wastefull to buy a single ballast?

  5. #13
    Somewhat Unstable superimposedhope's Avatar
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    Jason,
    Whatever you multiply output, you must also divide by the same number to equal the life of the bulb. Toss the 40wtt fixture or keep it,it doesn't matter really.

    In the 40wtt fixtures the ballast is a single unit with dual outputs (4 wires + positive, negative, and ground) Jason, you are half correct, while it is technically wasteful to trash 2 fixtures to make one. You must remember that you are doin this in sacrifice to higher lumen efficiency, and flat out brighter lights for stronger more vigorous growth. I have a bulb running this way for a couple months now.

    40wtt fixture = $20 40wtt fixture = $20
    18" fixture = $10 2 40wtt bulbs = $10
    1 18" bulb = $6
    40wtt bulb = 1600 lumens
    15wtt bulb = 900 lumens 1600 X 2 = 3200 lumens

    OK, so you get 400 more lumens, out of a single bulb, thius single bulb also fits into terrariums ALOT easier than 48". It's more efficient!

    Joe
    900 X 4 = 3600 lumens
    \"There is nothing here of interest to any nation, as a matter of fact there is nothing here but humans!\"

  6. #14
    Copper's Avatar
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    Don't worry, I am always up to doing myself injury [img]http://www.**********.com/iB_html/non-cgi/emoticons/new/smile_m_32.gif[/img]
    I am just like a Super Hero, but without the power or motivation.................and the funky suit.

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    Tony Paroubek's Avatar
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    Why not just use a 65w sunlight compact fluorescent bulb in a simple clip on type reflector?? Should cost around $30-35 bucks for the bulb and reflector and give you about 4000 lumens. If your talking replacing 1 or 2 normal tubes every few months you end up spending about the same in bulb cost on an annual basis.
    Plus there is a whole lot less chance of burning down the house.. which would really cost alot to fix!

    Tony

    Here is a link to some bulbs that screw into normal medium incandescent bases. Would shop around for prices but this place has a nice selection of wattage and color temperature. NaturalLighting
    Is that a Nepenthes in your pocket or you just happy to see me?

  8. #16
    Somewhat Unstable superimposedhope's Avatar
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    Tony,
    You're right. The larger compact fluoros are a better way to go but you can also overdrive them too.
    I am not saying that anyone should or shouldn't, I just tossed it out there cause I have been messing with my lights.

    Joe
    \"There is nothing here of interest to any nation, as a matter of fact there is nothing here but humans!\"

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