Dohn

T8 Striplight 336 LED 220V 15W

  1. Dohn

    Dohn MASA Contributor

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    Dohn submitted a new Showcase Item:

    T8 Striplight 336 LED 220V 15W

    Read more about this showcase item here...
     
    Last edited by a moderator: 11 Mar 2016
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  3. scubaninja

    scubaninja

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    very cool tube, was thinking of doing something nuts like this with some LEDS a while back, was going to stuff a lot into a little strip, as it is there more or less, each taking its share of the voltage and current with a variable resistor to vary the current and make sure that they dont pop. The thing with LEDs and AC is that they only conduct in one direction, so it doesnt matter where you connect what(so them saying its atuo switchin is bull), what i came up with was two scenarios, either they double the number of LEDs and have one half conducting in one direction and the other half in the other direction, hence using 100% efficiency, but this may lead to an undesirable number of LEDs so half the number is used all conducting in one direction, and the switching of the AC is so fast that you cannot tell that the LEDs are actually turning on and off very fast, but here you are only 50% efficient. So it would be interesting to see how they pan out. How bright are they relative to actual T5s and MHs in your opinion? i'm not sure how popular the LED lights would really be in south due to the cost but if you are spending thousands of rands on livestock why not on lights? 15w is very attractive, but maybe not attractive enough... looking forward to your reply:thumbup:
     
  4. Dohn

    Dohn Thread Starter MASA Contributor

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    Hi Scubaninja
    Autoswitching in this case means that if the poles on 1 end of the tube match the other is automatically switches the poles so that they dont match. If i have 1 side connected with the terminal on both poles, it doesnt matter what pole i use on the other side, i dont even need both, using only live or neutral powers the light up.

    Ok for the price of the LED light i could get maybe 12 54w T5's or 24 25w Energy savers or maybe 2 150w metal halides.
    This is the 15w LED
    [​IMG]
    This is the 25w Energy saver
    [​IMG]
    This is 2 150w Metal Halides
    [​IMG]
     
  5. scubaninja

    scubaninja

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    yeah they are almost on par with the MHs, it does seem the LEDs have the brighter light(more white) but it seems that the metal halides have the higher intensity. they do look pretty awesome though
     
  6. Dohn

    Dohn Thread Starter MASA Contributor

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    I think the metal halides are 10000K and i know the energy saver and the LED are 6500K
     
  7. RiaanP

    RiaanP Moderator

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    Dohn, can you take the same 3 photo's again, but this time focus on the bottom of the tank.
     
  8. Dohn

    Dohn Thread Starter MASA Contributor

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    I did a comparisons test on the other setup, chucked some glass anemones and open mug corals in there with some silly rock.

    The test setup
    [​IMG][​IMG]
    2 25w Energy Savers
    [​IMG]
    1 15w LED Light
    [​IMG]
    2 150w Metal Halide
    [​IMG]

    Then some mixed pics
    First pic is the energy savers 2nd pic is the LED and third the Metal Halides
    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  9. Dohn

    Dohn Thread Starter MASA Contributor

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    Geez why my metal halides so blue
     
  10. scubaninja

    scubaninja

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    sheesh dohn those arent bright at all. two 25w energy savers equivalent? maybe its just the pictures, or my take on them but eish, rather pay for six energy savers. how many tubes will you run on the tank? I know, a reading of the light intensity at the base would do the trick, got a light meter thingie?
     
  11. Dohn

    Dohn Thread Starter MASA Contributor

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  12. Dohn

    Dohn Thread Starter MASA Contributor

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    Why arent the experienced members commenting....?
     
  13. Mike

    Mike Retired Moderator

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    I would think that the Mh lamps are nearer 20,000k lamps, the 10,000k lamps are much whiter, what is the make of the lamps?
     
  14. Dohn

    Dohn Thread Starter MASA Contributor

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    Mozoo. I'll try find out if K rating is written on the bulbs.
     
  15. ziyaadb

    ziyaadb

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  16. Mike

    Mike Retired Moderator

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    The 6,500k light will encourage algae growth, whilst it also encourages coral growth the water looks a bit yellow, so we prefer to look of the 10,000k light which is much whiter.
     
  17. Dohn

    Dohn Thread Starter MASA Contributor

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    Calmanation of 4 25w energy savers, 15w LED, 2 150w Metal Halides and 1 53w attnic blue tube[​IMG]
     
  18. jacquesb

    jacquesb Retired Moderator

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    I like the last one Dohn!

    Here's my comment: I dunno if the LED give equivalent light output, like the energy savers do. BUT, 15 watt is in my humble opinion not a LOT of light.

    For keep fish only - yeah sure..... for keeping corals - no way..... Then I too would rather go with 24 x 23 watt energy savers...... you can keep some DECENT corals with that light output!

    BUT - I do like the idea a LOT though..... will have to wait and see if these light-units become cheaper, that one can add like 10 of them, giving you about 150 watt's worth of light....
     
  19. lanzo

    lanzo Sponsor

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    just a quick question...i see one can get the led flood light.

    do you think one can compare it to a mh?
     
  20. trad

    trad Fish, thats the word!

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    Not at all MHs give off a hell of a lot of light, wheather or not our tanks need so much light is a different question, MH could be over kill but most sps tank still concur they are the best.

    to really compare the led and mh you would have to measure the PAR I dont think the naked eye can see it, however if you look at the last pic with all the lights on there is a strong beem og blue on the right showing that the MH over power the other lights.

    I currently run a am 250w and 4 t5s all 10000K but think 20000K mh is the way to go.
     
  21. finch

    finch

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