Ned LED Build

Discussion in 'Anything DIY Related' started by nick_fraser, 2 Nov 2011.

  1. nick_fraser

    nick_fraser

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    I have been looking at LED lighting for a While.
    And now after a unfortunate short this winter blowing most of my equipment and killing off most of my coral and fish I have a chance to play around with the LED lighting.


    My old lighting was 12 X 40W T5’s. 8 X 12000k and 4 X 20000K. This worked out to 480W and I don’t think I had enough for 1800 X 600 and water 700 deep.

    I ordered 2 X 20W 16000k 12V LED’s and after a 12 week wait (11 of them customs) they have arrived. I am very impressed. I have only played around with them in the office and plan on setting them up on my tank this weekend. They are extremely bright. I plan on running 4 of these 2 X 20000K and 4 12000K. So thats 200w compaired to my old lighting of 480W and i think that it will be at least 3X brighter

    Description:
    20W 16000K 45mil LED Panel for Aquarium

    Colour temperature: 15800K
    LED chips: EPILEDS EP-B4545V-A3 45x45 mil
    DC Forward Voltage (VF): 10-11V DC
    DC Forward Current (IF): 1000-2100mA max
    Viewing Angle: 120 Degree
    Intensity Luminous (Iv): 800-1400LM
    Life span 30000 hours guarantee

    Some Pics


    [​IMG]

    [​IMG]

    On the Heat Sink
    [​IMG]

    Turned on

    [​IMG]

    Tank test

    [​IMG]


    Still busy building the housing and will post some more pick later on.
     
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  3. RiaanP

    RiaanP Moderator

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    that is one serious LED.

    Looks good.
    Just not sure about the light angle. Would 90 or smaller not be better.

    But must admit, if one globe give that light, I cannot wait for you to stop playing...
     
  4. Suhayl

    Suhayl

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    Where did you buy these from? They look like powerfull led, is one led 20w?
     
  5. Tridan

    Tridan

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    Nice looking LED's, please pass on some more info on them.
     
  6. leslie hempel

    leslie hempel Moderator MASA Contributor

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    that thing shaddows a hailide :)....
     
  7. belindamotion

    belindamotion Google Master

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    Last edited: 2 Nov 2011
  8. nick_fraser

    nick_fraser Thread Starter

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    Yip that’s just the one 20W 16000k LED. I got 2 and plan on adding 3 10w 10000k . Bought the 2 20w on Ebay and cost me $34 (R/$ was R6:50/$1)

    Without the heat sink it takes 5sec and you can’t touch it and it takes about 5min to warm up the heat sink to 30DEG without the fan running. I just used an old CPU heat sink. With the fan on it runs cool to the touch.

    Right now I plan on running the 2 20W LEDs with 5m 72W 5500K Strip LEDS (will add the other 3LEDs when i get them.)

    So far housing material has cost me R200. 2X20W LED R230 2X heat sinks R80 2x 12v 20W LED drivers R250 and 1x 70W LED driver R225 and R500 for the LED Strip. So not so bad so far.

    If you Mail these guys they can give you a quote
    AC-RC Hobby <acrc@live.hk> (from China)
    Just a idea to play around and keen on getting the 50W and 100W but will wait for R/$ to drop.

    Dear Nicholas, please check the price summary below:

    1. EPILEDS 10W 10000K LED panel @USD10.00 x 4 = USD40.00
    2. EPILEDS 10W 20000K LED panel @USD10.00 x 4 = USD40.00
    3. EPISTAR 20W 6500K LED panel @USD17.50 x 2 = USD35.00
    4. EPILEDS 50W 10000K LED panel @USD51.00
    5. 100-240V 1.5A 50W waterproof LED Driver USD31.50
    Total: USD197.50
    Less 8% off discount: USD15.80
    Grand total: USD181.70 (Free shipping charge)

     
  9. belindamotion

    belindamotion Google Master

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    I have a small BOYU TL-450...what would I be looking at...at the moment, it's roughly 12Blue and 12White 3W CREE...I think...with these would it be 20W or 10W..in my case and how much of each...
     
  10. nick_fraser

    nick_fraser Thread Starter

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    Didnt see these but look realy cool
    dual 50w led

    These are the one's I got
    20W 16000K LED Panel for Aquarium | eBay

    How would you work out how many white and how many blue for a Tank...? Is one LED really 20W and/or 50.....?
    Definately Tagging...[/QUOTE]


    Yip thats just the one 20W led. if you look at it the LED directly for a few sec you see this white spot for about 5min afterwards.

    From what i understand the 10000K to 14000k is for growth (sun gives off 5500k) and the 20000k is for colour.
     
  11. nick_fraser

    nick_fraser Thread Starter

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    belindamotion

    surely 24 3W leds should be plenty?
     
  12. Xereo

    Xereo

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    Thats Some Serious Leds :)
     
  13. belindamotion

    belindamotion Google Master

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    @nick_fraser yes..24 3W is plenty...I was asking how much of the one's you have, would I need to get the same as the 24 3W...I'm asking as space is my problem and so I'm forever searching for LED's that are stronger and in the end, would need less of...
     
    Last edited: 2 Nov 2011
  14. belindamotion

    belindamotion Google Master

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    @lIghty @pXius ...can you guys give me you'r opinion on these...:blush:
     
    Last edited by a moderator: 26 Nov 2015
  15. Tridan

    Tridan

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    In that link, they give a lumens rating of 800 to 1400, thats a really big grey area 600 lumens either way, i reckon by now any manufacturer should be able to give a more accurate reading.

    Other than that they sound pretty cool
     
  16. nick_fraser

    nick_fraser Thread Starter

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  17. pXius

    pXius

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    @belindamotion

    Looking at the specs I'm sure they'll be sufficient to grow and maintain corals :), I do see 2 problems though. :whistling:

    1st. Even though they have a 120 degree viewing angle light output and higher PAR/PUR reading are found directly under the LEDS, so 90 degrees under a LED will be your most intense light spot. The further you move away from this angle the less intense light becomes. I'll try to find the graph that explains this graphically.

    My point is that 2 or 3 of these could light up a tank, but would only generate the sufficient growth conditions directly under them. That's the nice thing about 3W leds. You can more evenly spread the intensity. I'm not stating this as a fact as I have never used similar LEDS with that kind of wattage(20 and 50w) but to me it does make sense from previous research I've done.

    2nd The second possible problem I see is heat. A 50W or even 20W chip will get very hot. This means they'll need a sufficient method to transfer heat away from them. In other words a big heat sink and fan. So you're back to square one concerning your space problem.

    Sticking with 24x 3W LEDS would be my choice for your setup, but like everything else in this hobby there's more than one way of doing things. :1:
     
    Last edited by a moderator: 26 Nov 2015
  18. pXius

    pXius

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    Last edited by a moderator: 26 Nov 2015
  19. belindamotion

    belindamotion Google Master

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    1. Would it help if I get more of the 10W or 20W..then I can space them..

    2. Being so small..could I leave the current fans and maybe even add another two, seeing as this
    hardly takes space...
     
  20. dallasg

    dallasg Moderator MASA Contributor

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    those look good, what optics are u using?
     
  21. pXius

    pXius

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    More 10W would be my pick if you wanted to go the high wattage route in your size tank.

    The leds need to be mounted on a heat-sink. The fans cool down surface area. The led itself has almost none. So attaching it to a heat-sink spreads the heat over a larger surface area making it easier for the fan to cool.

    So yes you can use your current fans if they blow directly onto the heat-sink on which the LEDS are placed.
     
    Last edited: 2 Nov 2011
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